Question

The variables x and y vary inversely. When y is 24, x is 8. What is y when x is 4?

Answer 1

since xy=k, a constant, you need y such that

4y = 8*24

Answer 2

X=1/Y
let the constant be k
8=k/24 cross multiply
k= 192

the relationship : X=192/Y
therefore 4=192/y
4y=192
/4=/4
y=48