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1. |
In 729 litres solution of acid and water, the ratio of acid and water is 7 : 2. How many litres of water must be added to it to get the solution in which the ratio of acid and water is 5 : 3? |
A. | 187.2 |
B. | 182.4 |
C. | 178.2 |
D. | 180.4 |
Answer» D. 180.4 | |