Question

4/5 part of a tank contain water if 20 litres more is required to fill the tank, what is the capacity of the tank

Answer 1

Let the total amount that can be filled in the tank be x

Therefore, 4x/5 + 20 = x

4x/5 = x - 20

4x = (x - 20)5

4x = 5x - 100

5x - 4x = 100

x = 100