Question

Andrei has a glass tank. First, he wants to put in some marbles, each of which has a volume of 0.04liters. Then, he wants to fill the tank with water until it's completely full. If he uses 50 marbles, he will have to add 33 liters of water.

Answer 1

thats 35 litters because
0.04*50 is 2
2+33 is 35

Answer 2

The volume of the tank is 35 liters.

Explanation:

Andrei has a glass tank. first he wants to put in some marbles, then to fill the tank with water until it's completely full.

Volume of the tank = Volume of the marble + volume of the water

Volume of the marble = 0.04 liters

Let the number of the marble be 'x'

Volume of the tank = v

x = 50 , volume of the water = 33 liters

v = 33 + 50 (0.04)

v = 33 + 2

v = 35 liters

The volume of the tank is 35 liters.