Pat delivers newspapers every morning. On average, she can deliver newspapers to $17$ homes in $12$ minutes.  

1. If her normal route has $119$ homes, how long does it take her to deliver the mail on average?

   Hint (a):

   Make a proportion and use the variable $n$ to represent the unknown number of minutes.

   $\frac{ 17\text { homes}}{12 \text{ minutes}} = \frac{119 \text{ hours}}{n \text{ minutes}}$

   More Help (a):

   Multiply both sides by 12.

   $17 \text{ homes }=\frac{119 \text{ homes}\cdot 12 \text{ minutes}}{n \text{ minutes}}$

   Try solving the rest on your own.

   Answer (a):

   $n=84$

   $\frac{ 17\text { homes}}{12 \text{ minutes}} = \frac{119 \text{ hours}}{84 \text{ minutes}}$

2. When another deliverer is sick, Pat's route expands to a total of $155$ homes. How long does this route take her?

   Hint (b):

   See the hints and steps in part (a).