Question

Adrianne is planning to bake some chocolate, strawberry, and raisin muffins for a party. She was asked to bake half as many chocolate muffins as raisin muffins and three times as many strawberry muffins as chocolate muffins. If she only had enough ingredients to bake 480 muffins, how many raisin muffins did she bake?

Answer 1

c = 1/2 r
s = 3c
c+r+s = 480
Now just solve for r