Question

If x and y inversely and x=18 when y=6 find x when y=10?

Answer 1

`x=10.8`

Explanation:

If `x` and `y` vary inversely that implies `x*y=k` for all `x` and `y` values.

Therefore, if `x=18` and `y=6`, `x*y=k=18*6=108`

If `y = 10`, to find x we can let `k=108` and solve for `x`.

`x*(10)=108`

dividing both sides by 10:
`x=10.8`