First Store:50000(.10) = 5000. 50000 - 5000 = 45000 pounds. Second Store:45000(.20) = 9000. 45000 - 9000 = 36000 pounds.
The answer: 36000
Reverse engineering the question: A tractor trailer has a load of 50000 pounds. 10% of the weight gets unloaded at the first store, and 20% of the remaining load is removed at the second store. How much weight, in pounds, is left on the truck after the two deliveries?


Reasoning and answer: Beth and Jan scored a total of 12 + 10 = 22. Judy and Angel scored a total of 8 + 11 = 19. Thus, the first team scores 22 - 19 = 3 more points than the second team.
The answer: 3
What was the question?
Question: In the first team, Beth scored 12 while Jan scored 10. In the second team, Judy scored 8 while Angel scored 11. How many more points did the first team get than the second team?


Tina made postcards for 6 days, so she has made 6 days * 30 postcards / day = 180 postcards. For every postcard, Tina gets $5, so if she sold every card, she got 180 postcards * $5 / postcard = $900.
The answer: 900
Reverse engineering the question: To earn money for her new computer, Tina sells handmade postcards. In a day, she can make 30 such postcards. For each postcard sold, Tina gets $5. How much money did Tina earn if she managed to sell all the postcards she made every day for 6 days?


Reasoning and answer: Total distance travelled is 220km + 110km = 330 km. Time to travel that far is 330km / 110km / hour = 3 hours.
The answer: 3
What was the question?
Question: Edmonton is 220 kilometers north of Red Deer. Calgary is 110 kilometers south of Red Deer. If you travel at 110 kilometers per hour, how long will it take to get from Edmonton to Calgary?


In the first row, there are now 24 – 3 = 21 people. In the second row, there are now 20 – 5 = 15 people. So in total there are 21 in the first row + 15 in the second row + 18 in the third row = 54 people.
The answer: 54
Reverse engineering the question: There are 3 rows of people relaxing at the beach. The first row is made up of 24 people until 3 people get up to wade in the water. 5 people from the second row, which originally held 20 people, go to join them. The third row is made up of 18 people. How many people are left relaxing on the beach?


Catriona has 8 + 4 = 12 angelfish. She also has 12 x 2 = 24 guppies. Thus, she has 8 + 12 + 24 = 44 fish in her aquarium.
The answer: 44
Reverse engineering the question:
Catriona has 8 goldfish in her aquarium. She has 4 more angelfish than goldfish. Also, she has twice as many guppies as angelfish. How many fish does Catriona have in her aquarium?