Question

The ratio of red marbles to blue marbles in Simran's bag is equal to 1 to 1. If there are 20 red marbles, how many blue marbles are there?

Answer 1

There has to be 20 blue marbles

Explanation:

The ratio is 1:1, so to be equal we must replace 1 with 20 on both sides.

Answer 2

20

Explanation:

1/1 = 1

20/x = 1

x=20