1.

Two vessels A and B contain solution of acid and water. In A and B the ratio of acid and water are 7 : 3 and 4 : 1, respectively. They are mixed in the ratio 1 : 2. What is the ratio of acid and water in the resulting solution?

A. 15 : 8
B. 16 : 7
C. 23 : 7
D. 25 : 9
Answer» D. 25 : 9


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