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solve_time MCQ Questions for Class 9

solve_time se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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Practice Questions

24 questions tagged with solve_time.

Question 1/24 Expert Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

यदि (P(t)=75+8t) और (Q(t)=219-10t) है तो किस (t) पर (P(t)=Q(t)) होगा?

If (P(t)=75+8t) and (Q(t)=219-10t), at which (t) will (P(t)=Q(t))?

Explanation opens after your attempt
Correct Answer

B. (t=8)

Step 1

Concept

From (75+8t=219-10t), (18t=144). Therefore (t=8) is correct.

Step 2

Why this answer is correct

The correct answer is B. (t=8). From (75+8t=219-10t), (18t=144). Therefore (t=8) is correct.

Step 3

Exam Tip

(75+8t=219-10t) से (18t=144) होता है। इसलिए (t=8) सही है।

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Question 2/24 Expert Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

यदि (P(t)=70+5t) और (Q(t)=190-10t) है तो किस (t) पर (P(t)=Q(t)) होगा?

If (P(t)=70+5t) and (Q(t)=190-10t), at which (t) will (P(t)=Q(t))?

Explanation opens after your attempt
Correct Answer

B. (t=8)

Step 1

Concept

From (70+5t=190-10t), (15t=120). Therefore (t=8) is correct.

Step 2

Why this answer is correct

The correct answer is B. (t=8). From (70+5t=190-10t), (15t=120). Therefore (t=8) is correct.

Step 3

Exam Tip

(70+5t=190-10t) से (15t=120) होता है। इसलिए (t=8) सही है।

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Question 3/24 Expert Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 35

यदि (P(t)=52+4t) और (Q(t)=148-8t) है तो किस (t) पर (P(t)=Q(t)) होगा?

If (P(t)=52+4t) and (Q(t)=148-8t), at which (t) will (P(t)=Q(t))?

Explanation opens after your attempt
Correct Answer

B. (t=8)

Step 1

Concept

From (52+4t=148-8t), (12t=96). Therefore (t=8) is correct.

Step 2

Why this answer is correct

The correct answer is B. (t=8). From (52+4t=148-8t), (12t=96). Therefore (t=8) is correct.

Step 3

Exam Tip

(52+4t=148-8t) से (12t=96) होता है। इसलिए (t=8) सही है।

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Question 4/24 Hard Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 38

यदि (P(t)=38+6t) और (Q(t)=122-8t) है तो किस (t) पर (P(t)=Q(t)) होगा?

If (P(t)=38+6t) and (Q(t)=122-8t), at which (t) will (P(t)=Q(t))?

Explanation opens after your attempt
Correct Answer

B. (t=6)

Step 1

Concept

From (38+6t=122-8t), (14t=84). Therefore (t=6) is correct.

Step 2

Why this answer is correct

The correct answer is B. (t=6). From (38+6t=122-8t), (14t=84). Therefore (t=6) is correct.

Step 3

Exam Tip

(38+6t=122-8t) से (14t=84) होता है। इसलिए (t=6) सही है।

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Question 5/24 Hard Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

यदि (P(t)=55+5t) और (Q(t)=135-3t) है तो किस (t) पर (P(t)=Q(t)) होगा?

If (P(t)=55+5t) and (Q(t)=135-3t), at which (t) will (P(t)=Q(t))?

Explanation opens after your attempt
Correct Answer

B. (t=10)

Step 1

Concept

From (55+5t=135-3t), (8t=80). Therefore (t=10) is correct.

Step 2

Why this answer is correct

The correct answer is B. (t=10). From (55+5t=135-3t), (8t=80). Therefore (t=10) is correct.

Step 3

Exam Tip

(55+5t=135-3t) से (8t=80) होता है। इसलिए (t=10) सही है।

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Question 6/24 Hard Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

यदि (P(t)=40+4t) और (Q(t)=100-6t), तो किस (t) पर (P(t)) पहली बार (Q(t)) के बराबर होगा?

If (P(t)=40+4t) and (Q(t)=100-6t), at what (t) will (P(t)) first equal (Q(t))?

Explanation opens after your attempt
Correct Answer

C. (t=6)

Step 1

Concept

From (40+4t=100-6t), (10t=60). Therefore (t=6) is correct.

Step 2

Why this answer is correct

The correct answer is C. (t=6). From (40+4t=100-6t), (10t=60). Therefore (t=6) is correct.

Step 3

Exam Tip

(40+4t=100-6t) से (10t=60) होता है। इसलिए (t=6) सही है।

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Question 7/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

एक गोदाम में सामान (I(d)=300-20d) बचता है। कब सामान (120) बचेगा?

Items left in a warehouse are (I(d)=300-20d). When will (120) items be left?

Explanation opens after your attempt
Correct Answer

C. (d=9)

Step 1

Concept

From (300-20d=120), (20d=180) and (d=9). Set the remaining amount equal to the target.

Step 2

Why this answer is correct

The correct answer is C. (d=9). From (300-20d=120), (20d=180) and (d=9). Set the remaining amount equal to the target.

Step 3

Exam Tip

(300-20d=120) से (20d=180) और (d=9) है। बची मात्रा को लक्ष्य के बराबर रखें।

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Question 8/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

एक क्लब में सदस्य (M(w)=60+4w) हैं। कितने सप्ताह बाद सदस्य (100) होंगे?

Members in a club are (M(w)=60+4w). After how many weeks will the members be (100)?

Explanation opens after your attempt
Correct Answer

C. (w=10)

Step 1

Concept

From (60+4w=100), (4w=40) and (w=10). Form an equation for the target number.

Step 2

Why this answer is correct

The correct answer is C. (w=10). From (60+4w=100), (4w=40) and (w=10). Form an equation for the target number.

Step 3

Exam Tip

(60+4w=100) से (4w=40) और (w=10) है। लक्ष्य संख्या के लिए समीकरण बनाएं।

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Question 9/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

यदि (U(t)=150-15t), तो (U(t)=45) कब होगा?

If (U(t)=150-15t), when will (U(t)=45)?

Explanation opens after your attempt
Correct Answer

C. (t=7)

Step 1

Concept

From (150-15t=45), (15t=105) and (t=7). Move the subtraction term correctly in decay.

Step 2

Why this answer is correct

The correct answer is C. (t=7). From (150-15t=45), (15t=105) and (t=7). Move the subtraction term correctly in decay.

Step 3

Exam Tip

(150-15t=45) से (15t=105) और (t=7) है। क्षय में घटाव को सही दिशा में ले जाएं।

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Question 10/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

यदि (T(t)=54+6t), तो (T(t)=102) कब होगा?

If (T(t)=54+6t), when will (T(t)=102)?

Explanation opens after your attempt
Correct Answer

C. (t=8)

Step 1

Concept

From (54+6t=102), (6t=48) and (t=8). Solve the equation for the target value.

Step 2

Why this answer is correct

The correct answer is C. (t=8). From (54+6t=102), (6t=48) and (t=8). Solve the equation for the target value.

Step 3

Exam Tip

(54+6t=102) से (6t=48) और (t=8) है। लक्ष्य मान के लिए समीकरण हल करें।

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Question 11/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

बैटरी (B(h)=120-10h) प्रतिशत मॉडल से घटती है। बैटरी (50%) कब होगी?

A battery decreases by the model (B(h)=120-10h) percent. When will the battery be (50%)?

Explanation opens after your attempt
Correct Answer

C. (h=7)

Step 1

Concept

From (120-10h=50), (10h=70) and (h=7). Solve the decreasing model carefully.

Step 2

Why this answer is correct

The correct answer is C. (h=7). From (120-10h=50), (10h=70) and (h=7). Solve the decreasing model carefully.

Step 3

Exam Tip

(120-10h=50) से (10h=70) और (h=7) है। क्षय में घटे हुए मान को सावधानी से हल करें।

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Question 12/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 37

बचत राशि (S(m)=400+60m) रुपये है। राशि (760) रुपये कितने महीनों बाद होगी?

The saving amount is (S(m)=400+60m) rupees. After how many months will the amount be (760) rupees?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

From (400+60m=760), (60m=360) and (m=6). Set the target value equal to the model.

Step 2

Why this answer is correct

The correct answer is C. (6). From (400+60m=760), (60m=360) and (m=6). Set the target value equal to the model.

Step 3

Exam Tip

(400+60m=760) से (60m=360) और (m=6) मिलता है। लक्ष्य मान को मॉडल के बराबर रखें।

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Question 13/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

एक गोदाम में सामान (I(d)=250-15d) बचता है। कब सामान (100) बचेगा?

Items left in a warehouse are (I(d)=250-15d). When will (100) items be left?

Explanation opens after your attempt
Correct Answer

C. (d=10)

Step 1

Concept

From (250-15d=100), (15d=150) and (d=10). In decay set the remaining amount equal to the target.

Step 2

Why this answer is correct

The correct answer is C. (d=10). From (250-15d=100), (15d=150) and (d=10). In decay set the remaining amount equal to the target.

Step 3

Exam Tip

(250-15d=100) से (15d=150) और (d=10) मिलता है। क्षय में बची मात्रा को लक्ष्य के बराबर रखें।

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Question 14/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

एक क्लब में सदस्य (M(w)=45+3w) हैं। कितने सप्ताह बाद सदस्य (72) होंगे?

Members in a club are (M(w)=45+3w). After how many weeks will the members be (72)?

Explanation opens after your attempt
Correct Answer

C. (w=9)

Step 1

Concept

From (45+3w=72), (3w=27) and (w=9). Form an equation for the target number.

Step 2

Why this answer is correct

The correct answer is C. (w=9). From (45+3w=72), (3w=27) and (w=9). Form an equation for the target number.

Step 3

Exam Tip

(45+3w=72) से (3w=27) और (w=9) है। लक्ष्य संख्या के लिए समीकरण बनाएं।

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Question 15/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

यदि (U(t)=120-10t), तो (U(t)=50) कब होगा?

If (U(t)=120-10t), when will (U(t)=50)?

Explanation opens after your attempt
Correct Answer

C. (t=7)

Step 1

Concept

From (120-10t=50), (10t=70) and (t=7). Move the subtraction term correctly in decay.

Step 2

Why this answer is correct

The correct answer is C. (t=7). From (120-10t=50), (10t=70) and (t=7). Move the subtraction term correctly in decay.

Step 3

Exam Tip

(120-10t=50) से (10t=70) और (t=7) मिलता है। क्षय में घटाव को सही दिशा में ले जाएं।

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Question 16/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

यदि (T(t)=42+3t), तो (T(t)=72) कब होगा?

If (T(t)=42+3t), when will (T(t)=72)?

Explanation opens after your attempt
Correct Answer

C. (t=10)

Step 1

Concept

From (42+3t=72), (3t=30) and (t=10). Solve the equation for the target value.

Step 2

Why this answer is correct

The correct answer is C. (t=10). From (42+3t=72), (3t=30) and (t=10). Solve the equation for the target value.

Step 3

Exam Tip

(42+3t=72) से (3t=30) और (t=10) मिलता है। लक्ष्य मान के लिए समीकरण हल करें।

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Question 17/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

एक बैटरी (B(h)=96-6h) प्रतिशत बचती है। बैटरी (48%) कब होगी?

A battery remains (B(h)=96-6h) percent. When will the battery be (48%)?

Explanation opens after your attempt
Correct Answer

C. (8) घंटे(8) hours

Step 1

Concept

From (96-6h=48), (6h=48) and (h=8). In decay set the remaining value equal to the target.

Step 2

Why this answer is correct

The correct answer is C. (8) घंटे / (8) hours. From (96-6h=48), (6h=48) and (h=8). In decay set the remaining value equal to the target.

Step 3

Exam Tip

(96-6h=48) से (6h=48) और (h=8) मिलता है। क्षय में बचा हुआ मान लक्ष्य के बराबर रखें।

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Question 18/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 36

एक बचत राशि (S(m)=300+40m) रुपये है। कितने महीनों बाद राशि (620) रुपये होगी?

A saving amount is (S(m)=300+40m) rupees. After how many months will the amount be (620) rupees?

Explanation opens after your attempt
Correct Answer

D. (8)

Step 1

Concept

From (300+40m=620), (40m=320) and (m=8). Form an equation to reach the target value.

Step 2

Why this answer is correct

The correct answer is D. (8). From (300+40m=620), (40m=320) and (m=8). Form an equation to reach the target value.

Step 3

Exam Tip

(300+40m=620) से (40m=320) और (m=8) मिलता है। लक्ष्य मान पाने के लिए समीकरण बनाएं।

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Question 19/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 35

एक गोदाम में सामान (I(d)=200-12d) बचता है। कब सामान (80) बचेगा?

Items left in a warehouse are (I(d)=200-12d). When will (80) items be left?

Explanation opens after your attempt
Correct Answer

C. (d=10)

Step 1

Concept

From (200-12d=80), (12d=120) and (d=10). In decay set the remaining amount equal to the target.

Step 2

Why this answer is correct

The correct answer is C. (d=10). From (200-12d=80), (12d=120) and (d=10). In decay set the remaining amount equal to the target.

Step 3

Exam Tip

(200-12d=80) से (12d=120) और (d=10) मिलता है। क्षय में बची मात्रा को लक्ष्य के बराबर रखें।

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Question 20/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 35

एक कक्षा में सदस्य (M(w)=32+2w) हैं। कितने सप्ताह बाद सदस्य (50) होंगे?

Members in a class are (M(w)=32+2w). After how many weeks will the members be (50)?

Explanation opens after your attempt
Correct Answer

C. (9)

Step 1

Concept

From (32+2w=50), (2w=18) and (w=9). Form an equation for the target number.

Step 2

Why this answer is correct

The correct answer is C. (9). From (32+2w=50), (2w=18) and (w=9). Form an equation for the target number.

Step 3

Exam Tip

(32+2w=50) से (2w=18) और (w=9) है। लक्ष्य संख्या के लिए समीकरण बनाएं।

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Question 21/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 35

यदि (U(t)=64-4t), तो (U(t)=28) कब होगा?

If (U(t)=64-4t), when will (U(t)=28)?

Explanation opens after your attempt
Correct Answer

C. (t=9)

Step 1

Concept

From (64-4t=28), (4t=36) and (t=9). Move the subtraction term correctly in decay.

Step 2

Why this answer is correct

The correct answer is C. (t=9). From (64-4t=28), (4t=36) and (t=9). Move the subtraction term correctly in decay.

Step 3

Exam Tip

(64-4t=28) से (4t=36) और (t=9) मिलता है। क्षय में घटाव को सही दिशा में ले जाएं।

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Question 22/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 35

यदि (T(t)=30+2t), तो (T(t)=46) कब होगा?

If (T(t)=30+2t), when will (T(t)=46)?

Explanation opens after your attempt
Correct Answer

B. (t=8)

Step 1

Concept

From (30+2t=46), (2t=16) and (t=8). Solve the equation for the target value.

Step 2

Why this answer is correct

The correct answer is B. (t=8). From (30+2t=46), (2t=16) and (t=8). Solve the equation for the target value.

Step 3

Exam Tip

(30+2t=46) से (2t=16) और (t=8) मिलता है। लक्ष्य मान के लिए समीकरण हल करें।

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Question 23/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 35

एक बैटरी (B(h)=100-8h) प्रतिशत बचती है। बैटरी (60%) कब होगी?

A battery remains (B(h)=100-8h) percent. When will the battery be (60%)?

Explanation opens after your attempt
Correct Answer

B. (5) घंटे(5) hours

Step 1

Concept

From (100-8h=60), (8h=40) and (h=5). In decay set the remaining value equal to the target.

Step 2

Why this answer is correct

The correct answer is B. (5) घंटे / (5) hours. From (100-8h=60), (8h=40) and (h=5). In decay set the remaining value equal to the target.

Step 3

Exam Tip

(100-8h=60) से (8h=40) और (h=5) मिलता है। क्षय में बचा हुआ मान लक्ष्य के बराबर रखें।

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Question 24/24 Medium Mathematics Introduction to Polynomials Linear growth and decay Class 9 Level 35

एक बचत राशि (S(m)=200+50m) रुपये है। कितने महीनों बाद राशि (500) रुपये होगी?

A saving amount is (S(m)=200+50m) rupees. After how many months will the amount be (500) rupees?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

From (200+50m=500), (50m=300) and (m=6). Form an equation to reach the target value.

Step 2

Why this answer is correct

The correct answer is C. (6). From (200+50m=500), (50m=300) and (m=6). Form an equation to reach the target value.

Step 3

Exam Tip

(200+50m=500) से (50m=300) और (m=6) मिलता है। लक्ष्य मान पाने के लिए समीकरण बनाएं।

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