Mathematics · Mixture and Alligation
A chemist has one solution which is 50% acid and a second which is 25% acid. How much of each should be mixed to make 10 litres of a 40% acid solution?
- 14 litres of 50% and 6 litres of 25%
- 23 litres of 50% and 7 litres of 25%
- 36 litres of 50% and 4 litres of 25%✓
- 47 litres of 50% and 3 litres of 25%
Correct answer
6 litres of 50% and 4 litres of 25%
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