Kenny used 38 / 4 = 9.5 mushrooms on his pizza. Karla used 42 / 4 = 10.5 mushrooms on her pizza. Together, the twins used 9.5 + 10.5 = 20 mushrooms. There are 8 / 4 = 2 mushrooms left on the cutting board. GiGi cut up 20 + 2 = 22 mushrooms at the beginning.
The answer: 22
Reverse engineering the question: GiGi took out a big bowl of mushrooms from the refrigerator. She cut each mushroom into 4 pieces. Her twins, Kenny and Karla sprinkled mushrooms on their pizzas and baked them in the oven. Kenny grabbed a handful and sprinkled 38 mushroom pieces on his pizza. Karla scooped them up with both hands and sprinkled 42 mushroom pieces on her pizza. On the cutting board, were 8 pieces of mushrooms remaining. How many mushrooms did GiGi cut up at the beginning?


Reasoning and answer: The candy bars cost 4 * 2 = $8. Todd has 20 - 8 = $12 left.
The answer: 12
What was the question?
Question: Todd has $20. He buys 4 candy bars that cost $2 each. How much money in dollars does Todd have left?


If there were 5000 new cases on the first week, the total for the second week is 1 / 2 * 5000 cases = 2500 cases. The total number of new coronavirus cases in the three weeks is 2500 cases + 5000 cases + 2000 cases = 9500 cases.
The answer: 9500
Reverse engineering the question: New York recorded 5000 new coronavirus cases on a particular week. In the second week, half as many new coronaviruses cases as the first week was recorded by the state. In the third week, 2000 more cases were recorded in the state. What is the total number of recorded new coronaviruses in the state after the three weeks?


Reasoning and answer: First find how much the rail project will increase the house value by multiplying the initial value by 25%: $400,000 * .25 = $100,000. Then add that amount to the initial value to find the new value: $100,000 + $400,000 = $500,000. Then divide the maximum amount of property tax Jenny can afford to pay by the property tax rate to find the maximum value her house can have: $15,000 / .02 = $750,000. Now subtract the house's value after the rail project from the maximum value to find how much value the improvements can have: $750,000 - $500,000 = $250,000.
The answer: 250000
What was the question?
Question: Jenny's property tax rate is 2%. Her house is currently worth $400,000. The city is about to build a new high-speed rail project nearby, which will increase her house's value by 25%. Jenny can only afford to spend $15,000/year on property tax. How many dollars worth of improvements can she make to her house before her property tax bill gets too high?


At 5 A.M., the temperature was 50 degrees + 1.5 degrees = 51.5 degrees. At 7 A.M., the temperature was 51.5 degrees + 1.5 degrees = 53 degrees. At 9 A.M., the temperature was 53 degrees + 1.5 degrees = 54.5 degrees. At 11 A.M., the temperature was 54.5 degrees + 1.5 degrees = 56 degrees.
The answer: 56
Reverse engineering the question: Two days ago, the temperature in the morning went up 1.5 degrees every 2 hours. If the temperature was 50 degrees at 3 A.M., what was the temperature at 11 A.M.?


From the bride's side, 20 couples * 2 guests / couple = 40 guests attended. From the groom's side, 20 couples * 2 guests / couple = 40 guests attended. Therefore 180 guests - (40 guests + 40 guests) = 100 friends attended the reception.
The answer: 100
Reverse engineering the question:
A couple's wedding reception had 180 people. The bride and groom had each invited 20 couples from their side of the family. The remaining guests were friends. How many friends attended the reception?