Question

Given the volume of storage boxes at 6,400 cubic feet and the cost of storage at 3.5 cents per cubic foot per month, what is the monthly cost of storage?$224$216$205$198None of these choices are correct.

Answer 1

Given the total volume (V) and rate per unit volume (R) as,

$\begin{gathered} V=6400 \\ R=3.5 \end{gathered}$

So the total cost (C) of storage will be obtained by multiplying the rate per unit volume to the total volume of storage boxes,

$\begin{gathered} C=V\times R \\ C=6400\times3.5 \\ C=22400 \end{gathered}$

Thus, the total cost is 22400 cents (because the rate was given in cents per unit volume).

Consider the following,

$\begin{gathered} 100\text{ cents}=1\text{ dollar} \\ \Rightarrow22400\text{ cents}=\frac{22400}{100}\text{ dollars} \\ 22400\text{ cents}=224\text{ dollars} \end{gathered}$

Thus, the total cost is $224.

Therefore, first option is the correct choice.