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

The video tutorial explains how to solve a problem involving the ratio of boys to girls in a school. Given that there are 95 girls and the ratio of boys to girls is 4:5, the tutorial demonstrates how to calculate the number of boys and the total number of students. The process involves dividing the number of girls by the ratio number, multiplying to find the number of boys, and adding both to find the total. The tutorial also outlines the marks allocation for solving the problem, emphasizing the importance of each calculation step.

What is the ratio of boys to girls in the school?

• 4 to 5

• 5 to 4

• 3 to 4

• 2 to 3

If there are 95 girls in the school, how many times is the ratio number for girls multiplied to get this number?

• 18

• 19

• 20

• 21

How many boys are there in the school?

• 76

• 95

• 80

• 85

What is the total number of students in the school?

• 171

• 200

• 150

• 180

How many marks are awarded for correctly multiplying by 19 in the solution?

• 3 marks

• No marks

• 2 marks

• 1 mark