# The cost of pure milk is Rs.16 per liter. On adding water , the mixture is sold at Rs.15/ liter. In this way the milk man earns 25% profit .What is the ratio of milk and water in the mixture?

A. 25:7

B. 7:25

C. 15:1

D. 1:15

E. None of these

A. 25:7

B. 7:25

C. 15:1

D. 1:15

E. None of these

Let X is the cost of pure Milk. Then,

Cost of Misture,

X + 25% of X = 15

100X + 25X = 15*100

125X = 15 *100

X = (15 *100)/125 = Rs. 12.

So, Milk of Rs. 12 sold at Rs. 15.

Part of Milk buyer gets in 12,

In Rs. 16 = 1 lit milk.

So, in 12 = 12/16 = 3/4 part milk he gets and 1/3 part water.

Therefore ratio Milk : water

3/4 : 1/3

= 3 : 1.

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