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?

A)  5 litres, & 10 litres                          

B)  3 litres, & 5 litres

C)  5 litres, & 7 litres                             

D)  55 litres, & 57 litres

E) (e) None of these