The ratio of blue marbles to red marbles in a bag is 11:9.If there are 99 blue marbles in the bag,how many red marbles are there?

Question

asked May 4, 2017 198k views

1 Answer

Aquaholic · Answer 1 · 2017-05-09T17:46:09+0000

Let the number of red marbles be x.

We have: 99/x = 11/9

Cross multiply:
11x = 99*9
⇒ x= (99*9/11)= 81

There are 81 red marbles~