Q:

On Fridays, Harry's school serves a choice of hamburgers or pizza for lunch. 60% of the sixth grade class ate pizza this Friday. If 36 sixth grade students ate pizza, how many students are in the sixth grade?

Accepted Solution

A:
Let s = # of students in the sixth grade.  60% of these, or 0.60s, ate pizza:  thus, 0.60s = 36.  Solving for s, s = 36/0.60 = 60.

There are 60 students in the sixth grade.