Both apple trees will be 10 feet wide at maturity so they will be 2 * 10 = 20 feet wide. Quinton will need to leave 12 feet between these 2 trees so the apple trees will take up 20 + 12 = 32 feet. Both peach trees will be 12 feet wide at maturity so they will be 2 * 12 = 24 feet wide. Quinton will need to leave 15 feet between these 2 trees so the peach trees will take up 24 + 15 = 39 feet. Together, the apple trees will take up 32 feet and the peach trees will take up 39 feet so they will take 32 + 39 = 71 feet.
The answer: 71
Reverse engineering the question: Quinton is looking to add 4 fruit trees to his backyard. He wants to plant 2 apple trees that will be 10 feet wide each and need 12 feet between them. The peach trees will be closer to the house and will grow to be 12 feet wide and will need 15 feet between each tree. All told, how much space will these trees take up in his yard?


Reasoning and answer: First convert the total length of the journey from kilometers to meters: 9 kilometers * 1000 meters / kilometer = 9000 meters. Then divide this by the length of one step to find the number of steps in the journey: 9000 meters / 3 meters / step = 3000 steps. Then multiply the number of steps by the number of flowers per step to find how many flowers one unicorn creates on the journey: 3000 steps * 4 flowers / step = 12000 flowers. Then multiply the number of flowers per unicorn by the number of unicorns to find the total number of flowers created: 12000 flowers / unicorn * 6 unicorns = 72,000 flowers.
The answer: 72000
What was the question?
Question: There are six unicorns in the Enchanted Forest. Everywhere a unicorn steps, four flowers spring into bloom. The six unicorns are going to walk all the way across the forest side-by-side, a journey of 9 kilometers. If each unicorn moves 3 meters forward with each step, how many flowers bloom because of this trip?


Each cut piece is 20 / 2 = 10 feet long. So they each weigh 10 * 150 = 1500 pounds.
The answer: 1500
Reverse engineering the question: John takes a 20-foot log and cuts it in half. If each linear foot of the log weighs 150 pounds how much does each cut piece weigh?


Reasoning and answer: The second student counted 12 / 3 = 4 more squirrels than the first student. The second student counted 12 + 4 = 16 squirrels. Together, the first and second student counted 12 + 16 = 28 squirrels combined.
The answer: 28
What was the question?
Question: One student on a field trip counted 12 squirrels. Another counted a third more squirrels than the first student. How many squirrels did both students count combined?


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
Reverse engineering the 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?


First, we find their current point in time be realizing that 4 years is 4 sets of 12 months, meaning at that anniversary they will have been together 4 * 12 = 48 months. Then, we subtract their 6 month difference, finding they are at 48 - 6 = 42 months into their relationship. Since 2 years would be 2 * 12 = 24 months into the relationship. We take the larger number, 42, and subtract the smaller number, 24 to find the difference in months, meaning it is 42 - 24 = 18 months.
The answer: 18
Reverse engineering the question:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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In 6 months Bella and Bob will be celebrating their 4th anniversary. How many months ago did they celebrate their 2nd anniversary?