#### Answer

Ans = $\frac{1 Dollar}{5 Minutes}$

#### Work Step by Step

15 Dollar for 75 minutes.
First Write the ratio and divide the common units:
So, $\frac{15 Dollar}{75 Minutes}$
Now find the lowest term
$\frac{15 Dollar}{75 Minutes}$
= $\frac{15\div15 Dollar}{75\div15 Minutes}$
= $\frac{1 Dollar}{5 Minutes}$