यदि (y=300-bx) में (x=6) से (x=14) तक (y) (120) घटता है, तो (b) क्या है?

If in (y=300-bx), (y) decreases by (120) from (x=6) to (x=14), what is (b)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (15)

Step 1

Concept

The change in (x) is (8). The total decrease is (8b=120), so (b=15).

Step 2

Why this answer is correct

The correct answer is C. (15). The change in (x) is (8). The total decrease is (8b=120), so (b=15).

Step 3

Exam Tip

(x) में परिवर्तन (8) है। कुल कमी (8b=120) है इसलिए (b=15) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (y=300-bx) में (x=6) से (x=14) तक (y) (120) घटता है, तो (b) क्या है? / If in (y=300-bx), (y) decreases by (120) from (x=6) to (x=14), what is (b)?

Correct Answer: C. (15). Explanation: (x) में परिवर्तन (8) है। कुल कमी (8b=120) है इसलिए (b=15) है। / The change in (x) is (8). The total decrease is (8b=120), so (b=15).

Which concept should I revise for this Mathematics MCQ?

The change in (x) is (8). The total decrease is (8b=120), so (b=15).

What exam hint can help solve this Mathematics question?

(x) में परिवर्तन (8) है। कुल कमी (8b=120) है इसलिए (b=15) है।