Edexcel IGCSE Math A 1.7.E Ratio & Proportion Problems

Practise translating recipes, sharing, scale diagrams and linked quantities into ratios or proportional calculations.

Exam points

scale recipes or ingredient lists and identify the limiting quantity
divide a total in a stated ratio before applying fractions or percentages
combine linked ratios or proportional statements to find an unknown amount

[Maximum number: 3]

Avril bakes a cake.
She uses flour, butter and sugar such that
weight of flour: weight of butter =6: 5
weight of butter: weight of sugar =3: 2
Avril uses 120 grams of sugar.
Work out the weight of flour Avril uses.
grams

Butter:

120\times\frac32=180

Flour:

180\times\frac65=216

Final answer:

216\text{ g}

M1 for finding one share or the amount of butter, or for writing the 3-part ratio correctly.
M1 for a correct calculation or equation to find the amount of flour.
A1 for flour =216, clearly labelled.

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1.7.E Word problems about ratio and proportion question 1