Acid and water in a vessel A are 5: 2In proportion and pot BIn the ratio of 8: 5. Accordingly thoseIn what proportion of the pottery mixturesRemove the mixture so that they have acid andWhat is the ratio of water to 9: 4?

Acid and water are mixed in a vessel A in the ratio of 5 :2 and in the vessel B in the ratio 8 :5 . In what proportion should quantities be taken out from the two vessel so as toform a mixturein which the acid and water will be in the ratio of 9:4? (A) 7 : 2 (B) 2 : 7 (C ) 7 : 4 (D) 2 : 3

In 729 litres solution of acid and water, the ratio of acid and water 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 ?