Question

a milkman adds 10 liters water in 10 liter milk. his son takes 15 liter of milk and adds 5 liter water in it. find out the amount of water in liter in this milk?
Answer is 12.5 but how to solve this

Answer 1

Answer:

Mixture of milk and water=10 litres+10 litres=20 litres . So the milk water ratio is 1:1

Son takes 15litres of mixture i.e. 7.5 litres milk + 7.5litres water

Where water=7.5 litres

After adding 5 liters of water, water in the mixture= 7.5 + 5 = 12.5 litres

Answer 2

Answer:

No, the amount of water would be 7.5 litres

Step-by-step explanation:

Given,

If 10 litres water is added in 10 litre milk.

In the mixture ratio of water and milk = 1 : 1

After taking 15 litre of mixture,

New amount of mixture = 20 - 15 = 5 litre,

Ratio of water and milk = 1 : 1

Let water = x milk = x

So, 2x  = 5,

⇒ x = 2.5

Thus, 5 litre mixture contains 2.5 litre milk and 2.5 litre water,

Now, by adding 5 litre water again,

The new amount of water = 2.5 + 5 = 7.5 litres.