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Edexcel IGCSE Math A Foundation 1.7 Ratio and Proportion Questions

Use ratio-and-proportion questions to simplify ratios, share money, scale recipes and calculate unknown quantities from context.

Syllabus
First assessment 2018
Course
Math A 4MA1
Level
Foundation

Exam points

  • Simplify ratios from counts or tables and convert ratio parts into fractions of a total.
  • Share money or objects in two- and three-part ratios, then adjust the amounts.
  • Use scale factors in recipes, currencies or populations to calculate unknown quantities.

Covered syllabus points

1.7.A Ratio notation1.7.B Divide a quantity in a given ratio or ratios Share £4161.7.C The process of proportionality to evaluate unknown1.7.D Missing quantities in direct proportion1.7.E Word problems about ratio and proportion

Question 1

[Maximum number: 2]

The pictogram gives information about the number of parcels a company posted on each of four days last week.

Table for Question 1 — Edexcel IGCSE Math A Foundation
Figure for Question 1 — Edexcel IGCSE Math A Foundation

Represents 16 parcels

Find the ratio
number of parcels posted on Monday : number of parcels posted on Thursday Give your answer in its simplest form.

Question 2

[Maximum number: 7]

Jess makes salad dressing by mixing lemon juice and olive oil in the ratio 2: 5 by volume. She uses 0.5 litres of lemon juice.

Question (a)

(a)

Work out how much olive oil she uses to make the salad dressing.
litres

[ 2 ]

Question (b)

(b)

Tiesto wants to make 630 millilitres of the salad dressing. He mixes lemon juice and olive oil in the ratio 2: 5 by volume.

Work out how much olive oil he uses to make the salad dressing.
millilitres

[ 2 ]

Question (c)

(c)

Salad dressing is made by mixing lemon juice and olive oil in the ratio 2: 5 by volume.
The cost of lemon juice is $ 13.50 per litre.
The cost of olive oil is $ 18 per litre.

Work out the ratio
cost of lemon juice in the salad dressing : cost of olive oil in the salad dressing Give your ratio in its simplest form.

[ 3 ]
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