### Home > MC1 > Chapter 9 > Lesson 9.3.4 > Problem9-162

9-162.

Calculate each unit rate.

1. Misty typed $1104$ words in $18$ minutes. Find her rate of words per minute.

Her rate will be expressed in words per minute, so you need to divide the number of words typed by the number of minutes.

$\frac{1104\text{ words}}{18\text{ minutes}}\approx 61.3\text{ words per minute}$

2. Hannah earned $134.75$ in $11$ hours. Find her rate of dollars per hour.

Again, divide the number of dollars earned by the amount of time.

$12.25$ per hour

3. Six busses carried a total of $192$ students. Find the rate of students per bus.

This problem is very similar to parts (a) and (b).