.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).
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Let the amount of the two solutions to be mixed be x litres and y litres respectively. ... 50 % of the first solution is acidic, 25 % of the second solution is acidic, and these are mixed to form a 40% acidic solution of 10 litres.
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