[Question]Troy makes soup. He buys 4 pounds of beef and 6 pounds of vegetables. The vegetables cost $2 per pound and the beef is 3 times that price. How much does everything cost?
[Answer]The vegetables cost 2 * 6 = $12. The beef cost 2 * 3 = $6 per pound. So the beef cost 4 * 6 = $24. So the total cost is 12 + 24 = $36. The answer is 36.

[Question]Melody needs to read 20 pages for her English class, 16 pages for her Science class, 8 pages for her Civics, and 12 pages for Chinese class. She decided to read one-fourth of the number of pages for each class tomorrow. How many pages will she read tomorrow?
[Answer]She will read 20 pages / 4 = 5 pages for English. She will read 16 pages / 4 = 4 pages for Science. She will read 8 pages / 4 = 2 pages for Civics. She will read 12 pages / 4 = 3 pages for Chinese. Melody will read a total of 5 pages + 4 pages + 2 pages + 3 pages = 14 pages tomorrow. The answer is 14.

[Question]Hannah has three brothers. Her brothers are all 8 years old. How old is Hannah if she is twice as old as the sum of her brother's ages?
[Answer]The total of Hannah's brothers' ages is 3 * 8 = 24. Hannah is twice as old as the total of her brothers' ages, so Hannah is 24 * 2 = 48 years old. The answer is 48.

[Question]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?
[Answer]
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. The answer is 9.