GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Ratio - Explained

The video tutorial explains how to determine the ratio of white to grey tiles when 1/4 of the tiles are white. It clarifies a common mistake in calculating the ratio and demonstrates the correct method, resulting in a ratio of 1:3. The tutorial then applies this ratio to find the number of grey tiles in a total of 56 tiles, using a step-by-step approach to solve the problem. The importance of visual aids and diagrams in understanding the problem is emphasized.

If 1/4 of the tiles are white, what is the correct ratio of white tiles to gray tiles?

• 1:3

• 4:1

• 1:4

• 3:1

What is the total number of tiles if there are 2 white tiles and 6 gray tiles?

• 12

• 10

• 8

• 6

Given a total of 56 tiles, how many are gray if the ratio of white to gray tiles is 1:3?

• 28

• 56

• 14

• 42

How do you calculate the number of gray tiles from a total of 56 tiles?

• Divide the total by 4 and multiply by 3

• Multiply the total by 1/4

• Divide the total by 3 and multiply by 4

• Multiply the total by 3/4

What is the first step in solving a ratio problem involving a total number of tiles?

• Multiply the total by the ratio

• Add the parts of the ratio together

• Subtract the smaller ratio from the larger

• Divide the total by the number of tiles