Question

a gumball machine has red, orange, yellow, green and blue gumballs. 20% of the gumballs are red, 30% are orange, 5% are yellow, 10% are green, and the rest are blue. if there are a total of 120 gumballs, how many more blue gumballs are there than yellow gumballs?

Answer 1

20% red, 30% orange, 5% yellow, 10% green, totaling 65%.
Leaving 35% blue = 0.35(120) = 42
5% are yellow : .05(120) = 6
42 - 6 = 36 <== difference