Question

Samantha uses 3 cups of flour to

bake 15 cupcakes. If she uses 5
cups of flour, how many cupcakes
can Samantha bake?

Answer 1

25 cupcakes

Explanation:

1. What is the ratio?

3 cups of flour to 15 cupcakes (3:15)

2. Quotient

What is the quotient of 15 and 3? 5

3. 5 x 5

25

Answer: 25 cupcakes

Answer 2

25 cupcakes

Explanation:

set up a proportion then cross-multiply:

3/15 = 5/c

3c = 75

c = 25