Question

from a water tank that was full, 2/3 have been taken out, and there is still 400L, what is the capacity of the tank?

Answer 1

1200 L

Explanation:

2/3 of the tank is removed, so 1/3 of the tank is left. This is equal to 400 L.

1/3 V = 400 L

V = 1200 L

The volume of the tank is 1200 L.