A college has classes from 10:00 AM until 1:40 PM. In this duration, there are five periods. If 5 minutes are provided between each period to leave one class and enter the next class, how many minutes long is each period?
Choose the correct choice from the following answers
A) 38 min
B) 41 min
C) 40 min
D) 42 min
E) 52 min
The total time is 220 minutes.   There are four breaks of five minutes between the classes for a total of 20 minutes.   The total class time is 200 minutes.   200 / 5= 
<gadget id="calculator">200 / 5</gadget>
<output>40</output>
40 minutes per class   The answer is 40 min.
<result>C</result>
A college has classes from 10:00 AM until 1:40 PM. In this duration, there are five periods. If 5 minutes are provided between each period to leave one class and enter the next class, how many minutes long is each period?