Reasoning and answer: He writes 5 * 2 = 10 pages a day. So he writes 10 * 7 = 70 pages a week. That means he writes for 70 / 10 = 7 hours.
The answer: 7
What was the question?
Question: James writes 10 pages an hour. If he writes 5 pages a day to 2 different people, how many hours a week does he spend writing?


Let's say Greg had x number of golds. Katie had 4 * x = 4x. The total number of gold they all had is Katie's 4x + x gold for Gref = 5x. If the total amount of gold, which was 100 = 5x. Then x = 100 / 5 = 20. Greg had x = 20 gold.
The answer: 20
Reverse engineering the question: Greg and Katie went to Mrs. Scarlet's gold store to have their gold chests opened. They realized Greg had four times less gold than Katie when Mrs. Scarlet opened the chests. If the total amount of gold is 100, how much gold does Greg have?


Reasoning and answer: Lara gave 15 + 6 = 21 stems of flowers to her grandma. She gave away 21 + 15 = 36 stems of flowers. Therefore, Lara put 52 - 36 = 16 stems of flowers in the vase.
The answer: 16
What was the question?
Question: Lara bought 52 stems of flowers at the flower shop. She gave 15 flowers to her mom and gave 6 more flowers than she gave to her mom to her grandma. She put the rest in a vase. How many stems of flowers did Lara put in the vase?


Andrea sold 16 x 2 = 32 tickets. Half the number of tickets Jude sold is 16 / 2 = 8. So, Sandra sold 8 + 4 = 12 tickets. Thus, Andrea, Jude, and Sandra sold a total of 32 + 16 + 12 = 60 tickets. Therefore, 100 - 60 = 40 tickets need to be sold.
The answer: 40
Reverse engineering the question: There are one hundred tickets to be sold for a volleyball game. Andrea sold twice as many tickets as Jude while Sandra sold 4 more than half the number of tickets Jude sold. If Jude sold 16 tickets, how many tickets need to be sold?


Reasoning and answer: He bought 5 * 4 = 20 shirts. The discount saves him 15 * .2 = $3 per shirt. So each shirt cost 15 - 3 = $12. So the total order cost 20 * 12 = $240. Tax added 240 * .1 = $24. So he paid 240 + 24 = $264.
The answer: 264
What was the question?
Question: Tom decides to buy some shirts from his favorite fandoms because there is a sale on his favorite website. He buys 5 t-shirts from each of his 4 favorite fandoms. The shirts normally cost $15 each but there is a 20% off sale.  The order qualified for free shipping but he still needed to pay 10% tax. How much did he pay?


Reasoning and answer: Throughout the 30 minutes, Kris blows up 2 balloons per minute * 30 minutes = 60 balloons. Her brother works at double Kris' speed in the first 15 minutes so he works at 2 balloons per minute * 2 = 4 balloons per minute. So in the first 15 minutes, he blows up 4 balloons per minute * 15 minutes = 60 balloons. In the second 15 minutes, he is working at double the rate he did previously, so he blows up 4 balloons per minute * 2 = 8 balloons per minute. In the second 15 minutes, Kris’ brother therefore blows up 8 balloons per minute * 15 minutes = 120 balloons. Throughout the 30 minutes, he has blown up a total of 60 + 120 = 180 balloons. Kris and her brother therefore blew up a total of 60 balloons from Kris + 180 balloons from Kris’ brother = 240 balloons.
The answer: 240
What was the question?
Question:
Kris is blowing u balloons for her sister’s party. She has 30 minutes to blow up as many balloons as possible and decides to enlist her brother’s help to increase the number of balloons. Kris can blow up a total of 2 balloon per minute, and her brother works twice as fast. After 15 minutes, her brother doubles his speed and works at this new speed for the remaining 15 minutes. After the 30 minutes, how many balloons, in total, did Kris and her brother blow up?