human
Miss Molly surveyed her class of 30 students about their favorite color. Half of the class answered green, one-third of the girls answered pink, and the rest of the class answered yellow. If there are 18 girls in the class, how many students like yellow best?
assistant
How many students answered green? ** 30/2 = <<30/2=15>>15 students answered green.
How many girls answered pink? ** 18/3 = <<18/3=6>>6 girls answered pink.
How many students answered either green or pink? ** So, 15 + 6 = <<15+6=21>>21 students answered either green or pink.
How many students answered yellow? ** Therefore, 30 - 21 = <<30-21=9>>9 answered yellow.
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