Question

12 litres of a solution contains 33 ×1÷3 % of acid.

How many litres of water is to be added to
reduce the acid percentage to 20%?​

Answer 1

Step-by-step explanation:

in 12 litre solution 4 litre = acid

now 4 =(12+water) ×20%

20= 12 + water

water = 8 litre

is required quantity to be added.