A mixture of 40 litres of milk and water contains 10% water. How much water (in litres) should be added so that the water is 20% in the new mixture?

A mixture of 40 litres of milk and water contains 10% water. How much

1.	A mixture of 40 litres of milk and water contains 10% water. How much water (in litres) should be added so that the water is 20% in the new mixture?
A.	4
B.	5
C.	7
D.	8
E.	None of these
Answer» C. 7

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A mixture of 40 litres of milk and water contains 10% water. How much water (in litres) should be added so that the water is 20% in the new mixture?

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