Solution
A brick has the dimension 4in by 2in by 8 in
The bathtub has dimension 60in by 30in by 18in
[tex]\begin{gathered} Volume\text{ of a brick = 4in x 2in x 8in = 64in}^3 \\ Volume\text{ of the bathtub = 60in x 30in x 18in = 32400in}^3 \end{gathered}[/tex]Number of bricks needed to fill an empty bathtub =
[tex]\begin{gathered} \frac{32400in^3}{64in^3}=506.25\text{ bricks} \\ =506\text{ bricks \lparen to nearest whole number\rparen} \end{gathered}[/tex]To
