Question

A chemist has one solution which is 50% acid and another solution which is 25% acid. How much each should be mixed to make 10 litres of a 40% acid solution? (Use Cramer’s rule to / solve the problem).

Answer 1

Let the no. of litres in 50% acid used be x litres and the no. of litres in 25% acid used be y litres

Here x + y = 10 and

(i.e) we have to mix 6 litres in 50% acid and 4 litres in 25% acid.