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Question

2 drums of mixture milk and water. Ratio of milk and water in first is 2:1 and in second is 5:2. Find ratoo of milk and water in new drum :
1) If both the drums are mixed in equal quantity.
2) if both the drums mix together in the ratio of 1:4

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Solution

Suppose both the drums contain 100 litres of mixture of water and milk.Since the ratio of milk to water in first drum is 2 : 1, soquantity of milk in first drum = 23 of 100 = 2003 litresquantity of water in first drum = 13 of 100 = 1003 litresSince the ratio of milk to water in first drum is 5 : 2, soquantity of milk in first drum = 57 of 100 = 5007 litresquantity of water in first drum = 27 of 100 = 2007 litresa. Suppose 50 litres of mixture is taken from the first and the second drum.quantity of milk in the mixture taken from first drum = 23 of 50 = 1003 litresquantity of water in the mixture taken from first drum = 13 of 50 = 503 litresquantity of milk in the mixture taken from second drum = 57 of 50 = 2507 litresquantity of water in the mixture taken from second drum = 27 of 50 = 1007 litresquantity of mixture in new drum = 100 litresquantity of milk in new drum = 1003 + 2507 = 700 + 75021 = 145021 litresquantity of water in new drum = 503 + 1007 = 350 + 30021 = 65021 litresratio of milk to water in new drum = 145021 : 65021 = 1450650 = 2913

Similarly you can do the second part.

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