The volume of a fish tank is 40 cubic feet. If the density is 0.4fish over feet cubed, how many fish are in the tank?

16

4

100

10

To solve this problem, we have to multiply the volume of the fish tank to the density of the fishes in the tank. By doing this, the cubic feet units will be cancelled and what will be left is the number of fishes in the tank.

(0.4 fish / ft³) (40 ft³) = 16 fishes