If there are 15 people in the house, the number of people eating pizza is 3 / 5 * 15 = 9 people. If each house member who eats pizza took four pieces to eat, the number of pieces taken is 4 * 9 = 36 pieces. Since the total number of pieces was 50, the number of pieces not taken is 50 - 36 = 14 pieces.
The answer: 14
Reverse engineering the question: In a house of 15, 3/5 of the people eat pizza. If Aviana brought pizza with 50 pieces, and each person eating pizza took 4 pieces, calculate the number of pizza pieces that remained.


Reasoning and answer: The number of stores opened is 5 + 10 = 15. The number closed is 2 + 6 = 8. There were 23 + 15 - 8 = 30 stores open.
The answer: 30
What was the question?
Question: The Super Soup franchise had 23 stores in 2018. In 2019, the business opened 5 new stores, but closed the 2 that performed the worst. And in 2020, they opened 10 new stores, closing the 6 worst-performing. How many stores did Super Soup have at the end of 2020?


He cuts 8 yards on both Saturday and Sunday so that’s 2 * 8 = 16 yards. It takes him 30 minutes to cut 1 yard so it takes him 30 * 16 = 480 minutes. There are 60 minutes in 1 hour and it takes him 480 minutes so that’s a total of 480 / 60 = 8 hours.
The answer: 8
Reverse engineering the question: It takes Jason 30 minutes to cut 1 lawn in his neighborhood. If he cuts 8 yards on both Saturday and Sunday, how many hours does he spend cutting grass?


Reasoning and answer: In the 8 seconds, Nate ran 4 * 168 = 672 meters. The total distance Nate ran is 672 + 500 = 1172 meters.
The answer: 1172
What was the question?
Question: Nate went out to do his daily exercises. In 8 seconds, he ran a distance equal to four times the length of a football field. He rested for a while, then ran 500 more meters. If the field's length is 168 meters, how far did Nate ran?


He got 200 * .9 = 180 RSVP. Of those only 180 * .8 = 144 people showed up. So only 144 - 10 = 134 got him gifts and hence need thank you cards.
The answer: 134
Reverse engineering the question: Jack wants to send thank you cards to everyone who got him a gift for his wedding. He sent out 200 invitations. 90% of people RSVPed but only 80% of people who RSVPed actually showed up. Then 10 people who showed up didn't get a gift. How many thank you cards does he need?


Let X be the wholesale price. The retail price of a pair of pants is X + X * 80% = $36. Thus 1.8 * X = $36. Thus X = $36 / 1.8 = $20.
The answer: 20
Reverse engineering the question:
A store owner buys clothes wholesale and adds 80% to the wholesale price to set the retail price. The retail price of a pair of pants is $36. What is the wholesale price?