Since Lucas makes 4 pieces of chocolate per student, he has 40 / 4 = 10 students. This upcoming Monday, there will be 10 - 3 = 7 students. Lucas will make 4 * 7 = 28 pieces of chocolate candy.
The answer: 28
Reverse engineering the question: Every week, Lucas makes 4 pieces of chocolate candy for each of his students on Monday. He made 40 pieces of chocolate candy last Monday. This upcoming Monday, 3 of Lucas' students will not be coming to class. How many pieces of chocolate candy will Lucas make for his class on Monday?


Reasoning and answer: They bought 12 pineapples for $1.25 apiece so 12 * 1.25 = $15.00. The pineapples cost $15.00 and it will cost $21.00 to ship so all total, it costs 15 + 21 = $36.00. In total it costs $36.00 to ship home a dozen pineapples so each pineapple costs 36 / 12 = $3.00 apiece.
The answer: 3
What was the question?
Question: While on vacation in Hawaii, Steve and Georgia decided to ship pineapples to their home. Each pineapple costs $1.25 and they buy a dozen. It will cost $21.00 to ship all of them to their home. How much will each pineapple end up costing them?


In 1 session he jumps 4 times / minute * 10 minutes = 40 times. In 5 days he does 2 sessions / day * 5 days = 10 sessions. He jumps 10 sessions * 40 times / session = 400 times in 5 days.
The answer: 400
Reverse engineering the question: When Spencer jumps rope, he jumps 4 times per minute. He jumps for 10 minutes each session and does 2 sessions each day. How many jumps will Spencer do in 5 days?


Reasoning and answer: Two instant camera cost 2 x $110 = $220. Three digital photo frames cost 3 x $120 = $360. Thus, the total amount is $220 + $360 = $580. So, Selena gets a discount of 5 / 100 x 580 = $29. Therefore, Selena pays a total of $580 - $29 = $551.
The answer: 551
What was the question?
Question: Selene buys two instant cameras at $110 and three digital photo frames at $120 each. She gets a 5% discount on all the items she purchased. How much does she pay in all?


Dexter used 4 x 3 / 8 = 3 / 2 liters of paint. Jay used 4 x 5 / 8 = 5 / 2 liters of paint. Together, they used 3 / 2 + 5 / 2 = 4 liters of paint. Since each of them used a gallon of paint, then they both used 2 x 4 = 8 liters of paint together. Therefore, 8 - 4 = 4 liters of paint were left.
The answer: 4
Reverse engineering the question: Dexter and Jay are using a gallon of white paint to paint the walls. Dexter used 3/8 of the gallon of paint while Jay used 5/8 of a gallon of paint. If a gallon is equal to 4 liters, how many liters of paint were left from Dexter and Jay combined?


Eustace’s current age must be 39 years old – 3 years = 36 years old. So Milford’s current age must be 36 years old / 2 = 18 years old. So in 3 years, Milford will be 18 years old + 3 years = 21 years old.
The answer: 21
Reverse engineering the question:
Eustace is twice as old as Milford. In 3 years, he will be 39. How old will Milford be?