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.
400cm3 of a lemon and lime drink are made by mixing 30cm3 of lemon juice with 30cm3 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.
The worked solutions to these exam-style questions are only available to those who have a Transum Subscription.
Subscribers can drag down the panel to reveal the solution line by line. This is a very helpful strategy for the student who does not know how to do the question but given a clue, a peep at the beginnings of a method, they may be able to make progress themselves.
This could be a great resource for a teacher using a projector or for a parent helping their child work through the solution to this question. The worked solutions also contain screen shots (where needed) of the step by step calculator procedures.
A subscription also opens up the answers to all of the other online exercises, puzzles and lesson starters on Transum Mathematics and provides an ad-free browsing experience.
Drag this panel down to reveal the solution
If you need more practice try the self-checking interactive exercises called Compound Units.
©1997 - 2020 Transum Mathematics :: For more exam-style questions and worked solutions go to Transum.org/Maths/Exam/