Question

Q.9: In 70 liters of a mixture of milk and water, the amount of pure milk is 56 liters. Find
the ratio of milk to water in the mixture.​

Answer 1

Answer:

Given that

mixture of milk and water=70 liters

pure milk=56 liters

so, no. of liters of water= mixture of milk and water - pure milk.

I.e x=70-56

x=14 liters.

therefore water=14 liters

and the ratio of milk and water=4:1.

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Answer 2

Answer:

Step-by-step explanation:Volume of milk in 70 Litres of milk-water mixture which contains 10% water= 70 x 90/100= 63- litres.

To decrease the % of milk to 87.5% , volume of water to be added, V, can be calculated as

= 70 x 0.9= (70 + V) x 0.875

63= 61.25 + 0.875 x V.

So V= 2.75/0.875=( 11/4) x( 7/8)

= 22/7= 3.1428 Litres.