यदि (y=220-bx) में (x=4) से (x=12) तक (y) (96) घटता है, तो (b) क्या है?
If in (y=220-bx), (y) decreases by (96) from (x=4) to (x=12), what is (b)?
Explanation opens after your attempt
C. (12)
Concept
The change in (x) is (8). The total decrease is (8b=96), so (b=12).
Why this answer is correct
The correct answer is C. (12). The change in (x) is (8). The total decrease is (8b=96), so (b=12).
Exam Tip
(x) में परिवर्तन (8) है। कुल कमी (8b=96) है इसलिए (b=12) है।
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