Search Class 10 Questions

4 results found for "notebook" in Class 10.

Question Medium Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 42

(720) रुपये में कुछ कॉपियाँ खरीदी गईं। यदि प्रत्येक कॉपी (6) रुपये सस्ती हो जाए तो (4) कॉपियाँ अधिक मिलती हैं। मूल प्रति कॉपी मूल्य क्या था?

Some notebooks are bought for (720) rupees. If each notebook becomes (6) rupees cheaper, (4) more notebooks can be bought. What was the original price per notebook?

Explanation opens after your attempt
Correct Answer

C. (36) रुपये(36) rupees

Step 1

Concept

If the original price is (x), then \(\frac{720}{x-6}-\frac{720}{x}=4\). This gives (x=36).

Step 2

Why this answer is correct

The correct answer is C. (36) रुपये / (36) rupees. If the original price is (x), then \(\frac{720}{x-6}-\frac{720}{x}=4\). This gives (x=36).

Step 3

Exam Tip

मूल मूल्य (x) हो तो \(\frac{720}{x-6}-\frac{720}{x}=4\)। इससे (x=36) मिलता है।

Open Question Page
Ask Friends
Question Medium Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 70

एक कॉपी में पहले पेज पर (5) स्टिकर हैं और हर अगले पेज पर (5) स्टिकर अधिक हैं। (20) पेजों पर कुल कितने स्टिकर होंगे?

A notebook has (5) stickers on the first page and (5) more stickers on each next page. How many stickers are there on (20) pages?

Explanation opens after your attempt
Correct Answer

D. (1050)

Step 1

Concept

The stickers form the AP \(5,10,15,\ldots\) and \(S_{20}=1050\). Exam tip: treat page patterns with a constant difference as APs.

Step 2

Why this answer is correct

The correct answer is D. (1050). The stickers form the AP \(5,10,15,\ldots\) and \(S_{20}=1050\). Exam tip: treat page patterns with a constant difference as APs.

Step 3

Exam Tip

स्टिकर \(5,10,15,\ldots\) समान्तर श्रेणी बनाते हैं और \(S_{20}=1050\)। परीक्षा में समान अंतर वाले पेज-पैटर्न को ए.पी. मानें।

Open Question Page
Ask Friends
Question Expert Mathematics Pair of Linear Equations in Two Variables Algebraic methods: Substitution method and Elimination method. Class 10 Level 55

एक कलम की कीमत (p) और एक कॉपी की कीमत (q) है। यदि (3p+4q=260) और (5p+2q=300), तो (q) का मान क्या है?

The price of one pen is (p) and one notebook is (q). If (3p+4q=260) and (5p+2q=300), what is the value of (q)?

Explanation opens after your attempt
Correct Answer

C. \(q=\frac{200}{7}\)

Step 1

Concept

Elimination gives \(p=\frac{340}{7}\). Substituting it in either equation gives \(q=\frac{200}{7}\).

Step 2

Why this answer is correct

The correct answer is C. \(q=\frac{200}{7}\). Elimination gives \(p=\frac{340}{7}\). Substituting it in either equation gives \(q=\frac{200}{7}\).

Step 3

Exam Tip

विलोपन से \(p=\frac{340}{7}\) मिलता है। इसे किसी एक समीकरण में रखने पर \(q=\frac{200}{7}\)।

Open Question Page
Ask Friends
Question Hard Mathematics Pair of Linear Equations in Two Variables Algebraic methods: Substitution method and Elimination method. Class 10 Level 55

एक कलम की कीमत (p) और एक कॉपी की कीमत (q) है। यदि (3p+2q=185) और (2p+5q=215), तो (q) का मान क्या है?

The price of one pen is (p) and one notebook is (q). If (3p+2q=185) and (2p+5q=215), what is the value of (q)?

Explanation opens after your attempt
Correct Answer

C. (25) रुपये(25) rupees

Step 1

Concept

Elimination gives (p=45). Then (3(45)+2q=185), so (q=25).

Step 2

Why this answer is correct

The correct answer is C. (25) रुपये / (25) rupees. Elimination gives (p=45). Then (3(45)+2q=185), so (q=25).

Step 3

Exam Tip

विलोपन से (p=45) मिलता है। फिर (3(45)+2q=185), इसलिए (q=25)।

Open Question Page
Ask Friends