Answer the following question, with explanation first.
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?

9
30 / 2 = 15 students answered green.

18 / 3 = 6 girls answered pink.

So, 15 + 6 = 21 students answered either green or pink.

Therefore, 30 - 21 = 9 answered yellow.

.

Thus, the answer is 9