Question

In this line of circles

Answer 1

11

What is a ratio?

A ratio has two or more numbers that symbolize relation to each other. Ratios are used to compare the numbers, and you can compare them using division.

Currently, there is 1 red circle and 3 blue circles, making the ratio 1: 3.

• Adding 1 red circle would make the ratio 2: 3.

• Adding 8 circles would make the ratio 9: 3.
• Adding 11 red circles would make the ratio 12: 3.

The ratio 12:3 can be simplified to get 4:1.

• 12 ÷ 3 = 4

• 3 ÷ 3 = 1

Therefore, you will need to add 11 red circles to get the ratio 4: 1.