Question

In a mixture of 80 liters of milk and water, 25% of the mixture is milk. How much water should be added to the mixture so that milk becomes 20% of the mixture?

• A. 20 liters
• B. 15 liters
• C. 25 liters
• D. None of these

Answer 1

The correct option is A 20 liters

Total mixture 80 liter
$Milkis25$% i.e..
$\frac{25}{100}\times 80=20litre$
to make it 20%, amount of water required to add
$=\frac{60+x}{80+x}\times 100=80\%$
6000 + 100x = 6400 + 80x
20x = 400, x = 20