Question

Ashley need 28 apples to make 4 pies. How many apples will she need to make 20 apple pies?

a. 120 apples
b. 128 apples
c. 136 apples
d. 140 apples

Answer 1

4 pies take 28 apples, so
1 pie takes 7 apples, then
20 pies take .....

or just solve for a in the simple proportion:
a/20 = 28/4

Answer 2

120 apples