Question: Annie brought 20 brownies to school. She gave half of them to the school administrator to put in the faculty lounge. Of the remaining brownies, she gave half to her best friend, Carl, and another two to her friend, Simon. How many brownies did she have left?
Answer: She first gave away half of her 20 brownies, or 20 / 2 = 10 brownies, to the faculty. The remaining brownies number 20 - 10 = 10 brownies. She gave half of these remaining brownies, or 10 / 2 = 5 brownies, to Carl. This reduced her number from 10 down to 10 - 5 = 5 brownies. Finally, she gave away another 2, leaving her with 5 - 2 = 3 brownies. The answer is 3.
[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.
Q: A housewife goes to the market. She spent 2/3 of her $150. How much does she have left?
A: The housewife has 3 / 3 - 2 / 3 = 1 / 3 of $150 left. This means she has $150 * (1 / 3) = $50 left. The answer is 50.
Question: Andrew bought 750 stickers. He shared some of his stickers with his friends, Daniel and Fred. Daniel received 250 stickers, while Fred received 120 more stickers than Daniel.  He kept the remaining stickers. How many stickers did Andrew keep?
Answer: Fred received 250 + 120 = 370 stickers. Thus, Andrew shared 250 + 370 = 620 stickers. Therefore, Andrew kept 750 - 620 = 130 stickers. The answer is 130.
[Question]Gretchen, Mitzi, and Beth went bowling together. Gretchen bowled a 120. Mitzi bowled a 113. Beth bowled an 85. What was their average bowling score?
[Answer]Gretchen bowled a 120 + Mitzi boweld a 113 + Beth bowled an 85 = 318 combined score. The average of their combined score of 318 / 3 bowlers = 106. The answer is 106.
[Question]Maria went on a trip to Belgium. She paid $300 for the ticket and half of that for the hotel. How much money does she have left, when she had $760 at the beginning?
[Answer]
For the hotel Maria paid 300 / 2 = $150. So Maria has 760 - 300 - 150 = $310 left. The answer is 310.