Question: Sebastian plays drums for percussion in an orchestra. He sits next to the brass section where four people play trombone, two play trumpet, and one plays a French horn. In front of them are the strings section with three violinists, a cellist, and a contrabassist. Next to the strings are a trio of clarinets and a quartet of flute players in the woodwinds section. The maestro conducts them all. How many people are in the orchestra?
Answer: Sebastian in the percussion section makes 1 person. The brass section has 4 + 2 + 1 = 7 people. The strings section has 3 + 1 + 1 = 5 people. The woodwinds section has 3 + 4 = 7 people. The maestro is 1 person. Thus, the orchestra has 1 + 7 + 5 + 7 + 1 = 21 people in it. The answer is 21.

Question: There were 50 racers in a bicycle charity race at the beginning of the race. After 20 minutes, 30 more racers joined the race. The total number of racers doubled after another 30 minutes. If at the end of the race only 130 people finished the race, what's the total number of people who dropped before finishing the race?
Answer: At the start, there were 50 racers, who were joined by 30 more racers, thus 50 + 30 = 80 racers. After 30 more minutes, the number of racers doubled, totaling 80 * 2 = 160 racers. If the number of racers who finished is 130, the 160 - 130 = 30 racers dropped before finishing. The answer is 30.

Question: Tricia ordered three dozen eggs. She will use 1/4 of them for making crepes, and 2/3 of the remaining for making cupcakes. How many eggs are left to make sunny-side-up eggs for breakfast?
Answer: Since a dozen is equal to 12, then 3 dozen eggs are equal to 12 x 3 = 36 eggs. Tricia will use 36 x 1 / 4 = 9 eggs for making crepes. So there are 36 - 9 = 27 eggs left. 27 x 2 / 3 = 18 eggs will be used for making cupcakes. Thus, there are only 27 - 18 = 9 eggs left to make sunny - side - up eggs for breakfast. The answer is 9.

Question: John takes a 10-minute shower every other day for 4 weeks. If his shower uses 2 gallons of water per minute. How much water does he use in those 4 weeks?
Answer:
There are 4 * 7 = 28 days in those 4 weeks. That means he takes 28 / 2 = 14 showers. So he takes a total of 14 * 10 = 140 minutes of showers. So he uses 2 * 140 = 280 gallons of water. The answer is 280.