यदि (y=240-15x), तो (y) में (90) की कमी के लिए (x) कितना बढ़ना चाहिए?
If (y=240-15x), by how much should (x) increase for (y) to decrease by (90)?
Explanation opens after your attempt
B. (6)
Concept
The total decrease is \(15\Delta x\). From \(15\Delta x=90\), \(\Delta x=6\).
Why this answer is correct
The correct answer is B. (6). The total decrease is \(15\Delta x\). From \(15\Delta x=90\), \(\Delta x=6\).
Exam Tip
कुल कमी \(15\Delta x\) होगी। \(15\Delta x=90\) से \(\Delta x=6\) मिलता है।
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