Problem-Solving and Data AnalysisEasy–MediumProportion in a mixture
Problem-Solving and Data Analysis practice question
A fruit punch is made by mixing juice and soda in the ratio 3 : 1. How many litres of juice are in 20 litres of punch?
Answer: 15
4 parts make 20 litres, so 1 part is 5 litres. Juice is 3 parts: 15 litres.
Common wrong answers
- If you answered 5
- 5 is the amount of SODA (1 part).
- If you answered 60
- 60 multiplies 20 by 3 instead of by 3/4.
- If you answered 6.67
- 6.67 divides 20 by 3, using the wrong number of parts.
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