The school nurse must conduct lice checks at the elementary school. She must check 26 Kindergarteners, 19 first graders, 20 second graders, and 25 third graders. If each check takes 2 minutes, how many hours will it take the nurse to complete all the checks?
The school nurse must check a total of 26 Kindergarteners + 19 first graders + 20 second graders + 25 third graders = 
<gadget id="calculator">26+19+20+25</gadget>
<output>90</output>
90 students in all.
If every check takes 2 minutes, it will take 90 students x 2 minutes = 
<gadget id="calculator">90*2</gadget>
<output>180</output>
180 minutes.
There are 60 minutes in one hour, so it will take 180 minutes / 60 = 
<gadget id="calculator">180/60</gadget>
<output>3</output>
3 hours to complete the checks.

<result>3</result>