Question

36. A 200 liter mixture of milk and water contains 20% water. How much water must be added to make Milk 20% in the mixture? O 630 O 650 O 600 O 720​

Answer 1

Answer:

120 litres

Step-by-step explanation:

Answer will be 60% of the mixture at because 20% water of the mixture is added and the water will be 80% because 100 - 20(percentage of milk) = 80%.

Hence, 60% of 200 = 120 litres

Answer 2

Given,

The volume of a mixture of water and milk = 200L

The volume of water = 20% of the total mixture

To Find,

The volume of water required to make Milk is 20% in the mixture =?

Solution,

The volume of water = 20% of the total mixture

The volume of water = 20% of 200L

The volume of water = (20/100)*200

The volume of water = 20 * 2

The volume of water = 40L

The volume of milk = Total volume - the volume of water

The volume of milk = 200 - 40

The volume of milk = 160L

Let the volume of the new mixture of milk and water formed be x

According to the question, the volume of milk in the previous mixture was 20% of the new mixture formed.

20% of x = The volume of milk = 160L

(20/100) * x = 160

x = (160 * 100) / 20

x = 160 * 5

x = 800L

The volume of the mixture having 20% milk is 800L

The volume of water in this mixture = 800 - 160

The volume of water in this mixture = 640L

Water present in the mixture = 40L

Water required  = 640 - 40

Water required  = 600L

Hence, 600L of water must be added to make Milk 20% in the mixture.