10th Class
Mathematics
Pair of Linear Equations in Two Variables
Question Bank
Self Test-3
question_answer
In a laboratory, there are solutions of acid and base of different concentrations. Mary works in a laboratory as a l1ab assistant and has to perform different types of tests of the patients. To test for sugar level in the blood she needs a special solution which is prepared by mixing the acids of two different concentrations. For this she needs one solution containing 60% acid and other solution containing 30% acid. In order to prepare a solution of 15 litres containing 40% acid, what should be the volume of each acid to be mixed?