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

The video tutorial explains how to solve a problem involving mixing wallpaper remover with water. It starts by introducing the problem and the proportions needed. The tutorial then guides through the calculation process to determine how much wallpaper remover is needed when a specific amount of water is used. The video concludes with a summary of the steps and the marks allocated for each part of the solution.

What is the total volume of the wallpaper remover bottle that Suguha has?

• 150 millilitres

• 750 millilitres

• 600 millilitres

• 450 millilitres

How much wallpaper remover is needed to mix with 4500 millilitres of water?

• 750 millilitres

• 150 millilitres

• 300 millilitres

• 600 millilitres

What is the proportion of wallpaper remover to water in the initial mixture?

• 1:75

• 1:60

• 1:30

• 1:45

If Soha uses 750 millilitres of water, how much wallpaper remover should she use?

• 100 millilitres

• 75 millilitres

• 25 millilitres

• 50 millilitres

How many marks are awarded for finding the correct proportion of wallpaper remover to water?

• Four marks

• Three marks

• Two marks

• One mark