Question

A collecter has 120 movie posters and 100 band posters she wants to sell 24 movie posters but still have her poster collection maintain the same ratio of 120:100 if she sells 24 movie posters how many band posters should she sell

Answer 1

80

Explanation:

Set up the expression

120 = 96

100 x

Cross multiply to get rid of the fractions =

120x=9600

Get x by itself by dividing both sides by 120 =

x = 80