Answer:
Width = [tex]1\frac{1}{3}[/tex] ft
Step-by-step explanation:
The tank holds 150 gallons of water.
7.5 gallons holds 1 ft³ of water.
So 150 gallons will hold;
[tex]\frac{150}{7.5}[/tex] × 1 ft³ = 20 ft³
The volume of the tank = Length(l) × Width(w) × Height(h) = 20 ft³
i.e 5 ft × w × 3 ft = 20 ft³
15w ft² = 20 ft³
w = [tex]\frac{20 ft^3}{15 ft^2}[/tex] = [tex]1\frac{1}{3}[/tex] ft
