GCSE · Ratio

Ratio problems where the amounts changeExam-style questions

How to handle ratios where quantities are added, removed or transferred by writing the parts as multiples of a common number and solving for it.

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18 questions · GCSE (Higher) level · mark scheme and worked solution on each · no sign-up to try

DifficultyAll Level 1 Level 2 Level 3 Level 4 Level 5

1
Simplify the ratio $12 : 18$ .
Level 1 · 1 markTry it
2
Write the ratio $50$ p to £ $2$ in its simplest form.
Level 1 · 2 marksTry it
3
In a class the ratio of boys to girls is $2 : 3$ . There are $12$ boys. How many girls are there?
Level 1 · 2 marksTry it
4
Orange squash is made by mixing squash and water in the ratio $1 : 4$ . How much water is needed for $200$ ml of squash?
Level 1 · 1 markTry it
5
Write the ratio $3 : 12$ in the form $1 : n$ .
Level 1 · 1 markTry it

13 more questions on ratio problems where the amounts change

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