Step-by-step reasoning process: The candy bars cost 4 * 3 = 12 dimes. Sam has 19 - 12 = 7 dimes left. Sam has 6 - 1 = 5 quarters left. Sam has 7 * 10 + 5 * 25 = 195 cents left.
[Q & A] The question is Sam has 19 dimes and 6 quarters. She buys 4 candy bars for 3 dimes each and 1 lollipop for 1 quarter. How much money, in cents, does she have left?
The answer is 195

Step-by-step reasoning process: Two weeks are 14 days, so Nathan played for 3 * 14 = 42 hours. Tobias played for 7 days, so he played a total of 5 * 7 = 35 hours. Nathan and Tobias played together for 42 + 35 = 77 hours.
[Q & A] The question is Nathan plays amateur baseball. He played for 3 hours for two weeks, every day. His friend Tobias played for 5 hours every day, but only for one week. How many hours did Nathan and Tobias play in total?
The answer is 77

Step-by-step reasoning process: The movie last 2.5 * 60 = 150 minutes. So he uses the bathroom 150 / 50 = 3 times.
[Q & A] The question is John uses the bathroom every 50 minutes. How many times does he use the bathroom during a 2.5-hour movie?
The answer is 3

Step-by-step reasoning process: Eustace’s current age must be 39 years old – 3 years = 36 years old. So Milford’s current age must be 36 years old / 2 = 18 years old. So in 3 years, Milford will be 18 years old + 3 years = 21 years old.
[Q & A]
The question is Eustace is twice as old as Milford. In 3 years, he will be 39. How old will Milford be?
The answer is 21