He needs to save up $100 because 14,600 - 14,500 = 100. He earned $60 off trips because 40 x 1.5 = 60. He earned $40 off groceries because 100 - 60 = 40. He delivered $800 in groceries because 40 / .05 = 800.
The answer: 800
Reverse engineering the question: Alex is saving up for a new car. He already has $14,500 saved up and the car costs $14,600. He decides that to make the last of the money he will deliver groceries for people in the neighborhood. He charges $1.5 per trip and then 5% of the price of the groceries. If he makes 40 trips and has saved up enough, how many dollars' worth of groceries did he deliver?


Reasoning and answer: He bought 40 / 5 = 8 boxes. He loses an average of 5 - 3.5 = $1.50 per box. So he loses an average of 1.5 * 8 = $12.
The answer: 12
What was the question?
Question: John buys game loot boxes for $5 each. The average value of items inside is $3.5.  He spends $40 on loot boxes. What is the average amount he lost?


Betty paid 6 x $2.5 = $15 for the slippers. She paid 4 x $1.25 = $5 for the lipsticks. She paid 8 x $3 = $24 for the hair color. Therefore, Betty paid $15 + $5 + $24 = $44 in total.
The answer: 44
Reverse engineering the question: Betty ordered 18 items in an online shop via cash on delivery. She ordered 6 pieces of slippers that cost $2.5 each, 4 pieces of lipstick for $1.25 each, and 8 pieces of hair color for $3 each. How much did Betty pay in total when it was delivered?


Reasoning and answer: The students have 20 minutes to start. They get 20 minutes added for the As because 10 times 2 equals 20. They get 12 minutes added for the Bs because 12 times 1 equals 12. They get no minutes added or subtracted for the Cs because 14 times 0 equals 0. They get 5 minutes taken away for the Ds because 5 times 1 equals 5. In total, they get 47 minutes of recess because 20 plus 20 plus 12 minus 5 equals 47.
The answer: 47
What was the question?
Question: The teacher decided to rewards his students with extra recess on report card day if they got good grades. Students normally get 20 minutes for recess. He told the students that every A got them 2 extra minutes of recess. Every B got them one extra minute. Every C got them zero extra minutes, but every D got them 1 less minute. When report cards came out there were 10 As, 12 Bs, 14Cs, and 5Ds. In total, how much recess would the students get that day?


First find the total area of the forest: 4 miles * 6 miles = 24 square miles. Then find the total number of trees in that area: 600 trees / square mile * 24 square miles = 14400 trees. Then find the number of trees all the loggers can cut down in one day: 8 loggers * 6 trees / logger = 48 trees. Then divide the total number of trees by the number cut down per day to find the number of days it takes to clear the forest: 14400 trees / 48 trees / day = 300 days. Then divide the time in days by the number of days per month to find the time in months: 300 days / 30 days / month = 10 months.
The answer: 10
Reverse engineering the question: One logger can cut down 6 trees per day. The forest is a rectangle measuring 4 miles by 6 miles, and each square mile has 600 trees. If there are 30 days in each month, how many months will it take 8 loggers to cut down all the trees?


The zoo has 8 x 3 = 24 snakes. It has 24 x 2 = 48 monkeys. The number of parrots and snakes added up is 8 + 24 = 32. There are 32 / 2 = 16 elephants. There are 16 - 3 = 13 zebras. The difference between zebras and monkeys is 48 - 13 = 35.
The answer: 35
Reverse engineering the question:
A zoo has 8 parrots. It 3 times the number of snakes than parrots and 2 times the number of monkeys than snakes. The number of elephants is half the number of parrots and snakes added up, and there are 3 fewer zebras than elephants. What is the difference in number between the zebras and the monkeys?