Expert Mathematics Introduction to Polynomials Class 9 Level 37

यदि (y=480-30x), तो (y) में (210) की कमी के लिए (x) कितना बढ़ना चाहिए?

If (y=480-30x), by how much should (x) increase for (y) to decrease by (210)?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

The total decrease is \(30\Delta x\). From \(30\Delta x=210\), \(\Delta x=7\).

Step 2

Why this answer is correct

The correct answer is C. (7). The total decrease is \(30\Delta x\). From \(30\Delta x=210\), \(\Delta x=7\).

Step 3

Exam Tip

कुल कमी \(30\Delta x\) होगी। \(30\Delta x=210\) से \(\Delta x=7\) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (y=480-30x), तो (y) में (210) की कमी के लिए (x) कितना बढ़ना चाहिए? / If (y=480-30x), by how much should (x) increase for (y) to decrease by (210)?

Correct Answer: C. (7). Explanation: कुल कमी \(30\Delta x\) होगी। \(30\Delta x=210\) से \(\Delta x=7\) मिलता है। / The total decrease is \(30\Delta x\). From \(30\Delta x=210\), \(\Delta x=7\).

Which concept should I revise for this Mathematics MCQ?

The total decrease is \(30\Delta x\). From \(30\Delta x=210\), \(\Delta x=7\).

What exam hint can help solve this Mathematics question?

कुल कमी \(30\Delta x\) होगी। \(30\Delta x=210\) से \(\Delta x=7\) मिलता है।

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