Problems based on Numbers Test 6

Question : 31 of 40

Marks: +1, -0

P varies inversely with the product of Q and R. when Q = 6, R = 12 and P = 75. When Q = 5, R = 10, then P is:

Solution:

When the product of Q and R is 72, then P = 75.
When the product of Q and R is 1, then P = 75 × 72.
When the product of Q and R is 50, then

P={75×72}/50=108 .

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