Question

Copy center prints black and white or colored copies. Yesterday, they printed 9 black and white copies for every 2 colored. If they printed 200 color copies then how many black and white copies where printed??

Answer 1

The answer to your question is 900 black and white copies

Explanation:

Data

9 black and white copies for every 2 colored

printed 200 color copies

black and white copies = ?

Process

This is a proportion exercise

BW : C :: bw : c

9 : 2 :: bw : 200

bw = 200(9) / 2

bw = 1800 / 2

bw = 900 copies