Answer:
Given volume of fish tank = 50 cubic feet
Thickness = 0.5 fish over feet cubed
Thickness can be characterized as the proportion of mass per unit volume
We know thickness = number/volume
Number of fishes = thickness × volume
= 0.5 × 50
= 5 × 5
= 25
Sn this way, on the off chance that the volume of a fish tank is 30 cubic feet and the thickness is 0.3 fish over feet cubed then the quantity of fish is 25