Question: John was 66 inches tall. He had a growth spurt and grew 2 inches per month for 3 months. How tall is he in feet?
Answer: He gained 2 * 3 = 6 inches. So his height is 66 + 6 = 72 inches. So he is 72 / 12 = 6 feet tall. The answer is 6.

Question: Joe sells ham and cheese sandwiches for $1.50. If a slice of bread costs $0.15, a slice of ham costs $0.25 and a slice of cheese costs $0.35, how many cents does a sandwich with one slice of each protein cost Joe to make?
Answer: First find the cost of two slices of bread: $0.15 / slice * 2 slices = $0.30. Then add the cost of one slice each of ham and cheese: $0.30 + $0.25 + $0.35 = $0.90. The answer is 90.

Question: Emerson and his friends love rowing and don't miss the sport on weekends. Starting in the morning, Emerson rowed and was 6 miles away from his starting point on a particular weekend. He continued for another 15 miles at a constant speed, only stopping for a while for rest before covering the remaining 18 miles. What's the total distance covered by Emerson on his trip?
Answer: After the first 6 miles, he rowed 15 miles more, reaching 6 + 15 = 21 miles. After resting, he adds 18 miles more, which is 18 + 21 = 39 miles. The answer is 39.

Question: There are three times as many girls as boys in the Biology class. The Physics class has 200 students. If the Biology class has half as many students as the Physics class, how many boys are in the Biology class?
Answer:
The Biology class has 200 / 2 = 100 students. The boys in the Biology class are 1 / 4 * 100 = 25 students. The answer is 25.