Question

Given that y varies inversely with x, and y = 100 when x + 3, find x if y = 60

Answer 1

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Answer 2

Explanation:

xy = k, where k is a real constant.

y = 100 when x = 3, therefore (3)(100) = k.

=> k = 300.

Hence when y = 60, x(60) = (300), x = 5.