यदि (y=160-bx) में (x=3) से (x=8) तक (y) (45) घटता है, तो (b) क्या है?

If in (y=160-bx), (y) decreases by (45) from (x=3) to (x=8), what is (b)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (9)

Step 1

Concept

The change in (x) is (5). The total decrease is (5b=45), so (b=9).

Step 2

Why this answer is correct

The correct answer is C. (9). The change in (x) is (5). The total decrease is (5b=45), so (b=9).

Step 3

Exam Tip

(x) में परिवर्तन (5) है। कुल कमी (5b=45) है इसलिए (b=9) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (y=160-bx) में (x=3) से (x=8) तक (y) (45) घटता है, तो (b) क्या है? / If in (y=160-bx), (y) decreases by (45) from (x=3) to (x=8), what is (b)?

Correct Answer: C. (9). Explanation: (x) में परिवर्तन (5) है। कुल कमी (5b=45) है इसलिए (b=9) है। / The change in (x) is (5). The total decrease is (5b=45), so (b=9).

Which concept should I revise for this Mathematics MCQ?

The change in (x) is (5). The total decrease is (5b=45), so (b=9).

What exam hint can help solve this Mathematics question?

(x) में परिवर्तन (5) है। कुल कमी (5b=45) है इसलिए (b=9) है।