Container A contains 2 liters of water more than Container B. Container B contains 8 liters of water more than Container C. The total volume of these three containers is 54 liters. How many liters of water does each of the containers contain?

Check this out carefully.

A = B + 2
B = C + 8
A + B + C = 54
B + 2 + B + C = 54
B + 2 + B + B - 8 = 54
3B = 60
B = 20. Can you finish?