## Exam-Style Question on Compound Units## A mathematics exam-style question with a worked solution that can be revealed gradually |

Question id: 286. This question is similar to one that appeared on a GCSE Higher paper in 2017. The use of a calculator is allowed.

The density of lemon juice is 1.15 grams per cubic centimetre.

The density of lime juice is 1.25 grams per cubic centimetre.

The density of soda water is 0.97 grams per cubic centimetre.

400cm^{3} of a lemon and lime drink are made by mixing 30cm^{3} of lemon juice with 30cm^{3} of lime juice and then soda water is added to make up the rest of the drink.

Find the density of the lemon and lime drink correct to two decimal places.

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