Calculate each unit rate.

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

   Hint (a):

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

   Answer (a):

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

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

   Hint (b):

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

   Answer (b):

   $$12.25$ per hour

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

   Hint (c):

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