Question

copy central prints black and white and colored copies. yesterday, they printed 9 black and white copies for every 2 colored cookies. if they printed 200 color copies, how many black and white copies were printed?

Answer 1

900

Explanation:

9 is to 2 as x is to 200.

2*100 = 100, so to make the equation equal, you have to multiply 100 to the other side.

9*100 = 900