[Question]Mike decides to do more pull-ups to increase his strength for climbing. He uses the greasing the groove technique where every time he goes into a certain room he does 2 pull-ups. He decides to use his office. He goes in there 5 times a day every day. How many pull-ups does he do a week?
[Answer]He does 5 * 2 = 10 pull - ups a day. So he does 10 * 7 = 70 pull - ups a week. The answer is 70.

[Question]There were 18 students assigned in a minibus for a field trip. Eight of these students were boys. On the day of the field trip, the number of girls and boys was the same since some of the girls were not able to join the trip. How many girls were not able to join the field trip?
[Answer]8 boys + 8 girls = 16 students joined the field trip. Thus, 18 - 16 = 2 girls were not able to join the field trip. The answer is 2.

[Question]Brandon has a collection of 20 baseball cards. Malcom has 8 more cards than Brandon. However, then Malcom gives half of his cards to his friend Mark. How many cards does Malcom have left?
[Answer]Malcom has 20 cards + 8 cards = 28 cards. Malcom gives away 1 / 2 * 28 cards = 14 cards to Mark. Malcom has 28 - 14 cards = 14 cards remaining. The answer is 14.

[Question]Jake sold 10 more stuffed animals than Thor. Quincy sold ten times as many stuffed animals as Thor. If Quincy sold 200 stuffed animals, how many more stuffed animals did Quincy sell than Jake?
[Answer]
Thor sold 200 / 10 = 20 stuffed animals. Jake sold 20 + 10 = 30 stuffed animals. Quincy sold 200 - 30 = 170 more stuffed animals than Jake. The answer is 170.