Question: Heidi's apartment has 3 times as many rooms as Danielle's apartment. Grant's apartment has 1/9 as many rooms as Heidi's apartment. If Grant's apartment has 2 rooms, how many rooms does Danielle's apartment have?
Answer: Heidi's apartment has 2 * 9 = 18 rooms. Danielle's apartment has 18 / 3 = 6 rooms. The answer is 6.

Question: Jangshe spent $610 on 7 pieces of clothing. One piece was $49 and another piece was $81. If the other pieces were all the same price, how many dollars was one of the other pieces?
Answer: 610 - 49 = 561, and then 561 - 81 = 480. There were 7 - 2 = 5 other pieces. 480 / 5 = 96 dollars. The other 5 pieces cost $96 each. The answer is 96.

Question: Bobby can deadlift 300 pounds at 13. When he is 18 he can deadlift 100 pounds more than 250% of his previous deadlift. How many pounds did he add per year?
Answer: His new deadlift is 300 * 2.5 + 100 = 850 pounds. So he added 850 - 300 = 550 pounds to his deadlift. This took 18 - 13 = 5 years. So he added 550 / 5 = 110 pounds per year. The answer is 110.

Question: Tina's bag contains nine apples, 5 oranges, and 17 tangerines. If she took away 2 oranges and 10 tangerines, how many more tangerines than oranges would she have left?
Answer:
Tina has 5 - 2 = 3 oranges. Tina has 17 - 10 = 7 tangerines. Tina has 7 - 3 = 4 more tangerines than oranges. The answer is 4.