Question

y varies inversely with x. If y = 30 when x = 12, find
y when x = 15 ​

Answer 1

Answer:

I think so the y is 33

.................................

Answer 2

Answer :

y = 75/2 = 37.5

Solution :

Given,

y varies inversely with x.

If y = 30, x = 12

Ratio of y to x = 30 : 12

We have to find y when x = 15

Ratio of y to x = y : 15

Comparing two ratios,

30/12 = y/15

y = 30 × 15/12

y = 37.5

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