Question

If y varies inversely as x, and y = 22 when x = 6, find x when y = 15.

Answer 1

Explanation:

y varies INVERSELY as x.

that means

y = k/x

therefore,

22 = k/6

k = 22×6 = 132

and then, when y = 15

15 = 132/x

15x = 132

x = 132/15 = 8.8