Question

A container holds 20 total marbles. there are 13 red marbles and the rest are blue. write the ratio of blue marbles to red marbles.

Answer 1

20

13

20 to 13

or 20 over 13

`(20)/(13)`

Answer 2

7/13

Explanation:

Total marbles =20

Number of red marbles = 13

Number of blue marbles=Total marbles -Number of red marbles

Number of blue marbles = 20-13=7

Hence,

The ratio of blue marbles to red marbles= Number of blue marbles/Number of red marbles

ratio of blue marbles to red marbles=7/13 which is the answer.