Y and x have a proportional relationship, and y = 25 when x = 60.

What is the value of x when y = 30?

-25

-36

-50

-72

This equation can be solved by using y = kx.

Since y = 25 when x = 60,

25 = 60k and if we solve for k then k = 5/12.

That means the equation we're using is

y = (5/12) x.

Plug in y = 30 and you get

30 = (5/12) x

Solve for x

30 * (12/5) = x

360/5 = x

x = 72

72 is the answer to this problem