Question

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

Answer 1

Answer: 81

Step-by-step explanation: Divide the number of blue marbles by the number in the ratio of the number of blue marbles. 99/11=9. Then multiply that by 9 to get the number of red marbles. 9*9=81.