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)?
Explanation opens after your attempt
C. (15)
Concept
The change in (x) is (8). The total decrease is (8b=120), so (b=15).
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).
Exam Tip
(x) में परिवर्तन (8) है। कुल कमी (8b=120) है इसलिए (b=15) है।
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