At Jonathan's school, there are 30 seventh graders participating in the school play. Of the students in the seventh grade, 60% are not participating in the school play. How many seventh graders at Jonathan's school are not participating in the school play?
Out of the 30 seventh graders, 60/100 x 30 = <<60/100*30=18>>18 seventh graders are not participating in the school play. Answer: \boxed{18}.
To find out how many seventh graders are not participating in the school play, you first need to calculate 60% of the total number of seventh graders.
Step 1: Calculate 60% of the total number of seventh graders.
0.60 x 30 = 18
Therefore, 18 seventh graders are not participating in the school play.
To find the number of seventh graders at Jonathan's school who are not participating in the school play, you need to calculate 60% of the total number of seventh graders.
First, find 60% of the total number of seventh graders participating in the play:
60% of 30 = (60/100) * 30 = 0.60 * 30 = 18
Therefore, there are 18 seventh graders at Jonathan's school who are not participating in the school play.