Marc P. answered • 11/03/19

Ivy League Grad to Help with Standardized Tests and Academic Work

You might find this easiest if you set up a proportion. The general rate is 4 apples/28 cents. You are being asked for the specific rate of 12 apples/x cents. You can therefore create a proportion by setting the rates equal to each other:

4 apples/28 cents = 12 apples/x cents

4/28 = 12/x [dropping the units]

4x = 28*12 [cross-multiplying]

x = 28*12/4 [dividing both sides of the equation by 4]

x = 84 [performing the multiplication and division]