Question discussion

P varies directly as Q and inversely as R. When Q = 2.7 and R = 1.6, then P = 4.5. What is the value of R when P = 6 and Q = 15?

3212Medium DSSSB TGT Computer Science 0 replies 1 views

Correct answer: B

Explanation

P = kQ/R. 4.5 = k × 2.7/1.6 gives k = 8/3. For P = 6 and Q = 15: 6 = (8/3) × 15/R, so R = 40/6 = 20/3.

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