Question

40 litres of a mixture of milk and water contains 10% of water, how much water must be added, to make the water
20% in the new mixture is:​

Answer 1

Answer:

Water in orignal mixture = 10% of 40 liters = 4 liters

And milk = 40- 4 = 36 liters

Suppose x liter of water is added to this mixture = (4+x) liters

Step-by-step explanation:

Ratio of water to milk in new mixture is 20% and 80%

Ratio of water to milk= 20:80=1:4

Thus,

$\frac{4 + x}{36} = \frac{1}{4}$

16 + 4x = 36

x = 5

I Hope this will help you....