Question

$72 for 7/1/2 hours Part A Find the unit rate. How much would it be for 40 hours?

Answer 1

We have that for seven and a half hours, you get 72$, then we have the following rule of three:

$\begin{gathered} 72\rightarrow7\frac{1}{2}hours \\ x\rightarrow1hour \end{gathered}$

then we have that:

$\begin{gathered} x=\frac{72\cdot1}{7\frac{1}{2}}=\frac{72}{\frac{15}{2}}=\frac{144}{15}=9.6 \\ x=9.6 \end{gathered}$

therefore, for each hour, you get $9.6

So, for 40 hours we have:

$40\cdot9.6=384$

finally, we have that for 40 hours you get $384