Question

If x = 27 when y = 70 and x varies directly with y, then how do you find x when y = 190?

Answer 1

`x= 73 2/7`

Explanation:

This can expressed as two ratios:

`27 " is to " 70 " as " x " is to "190`

`27 : 70 = x : 190" "` which can be written as:

`27/70 = x/190" "larr` now multiply both sides by `190`

`x = (27 xx190)/70`

`x= 73 2/7`