Reasoning and answer: First find how much longer the second generation's tails are: 25% * 16 cm = 4 cm. Then add that length to the first generation's tail length to find the second generation's tail length: 4 cm + 16 cm = 20 cm. Then find how much longer the third generation's tails are: 25% * 20 cm = 5 cm. Then add that length to the second generation's tail length to find the third generation's tail length: 5 cm + 20 cm = 25 cm.
The answer: 25
What was the question?
Question: James is trying to create a new breed of kittens with extra-long tails. Each generation of kittens he breeds has a tail 25% longer than the last generation. If the first generation has tails 16 cm long, how long are the third generation's tails?


Hazel sold 18 cups of lemonade to kids on bikes and gave half that amount, or 18 / 2 = 9 cups, away to friends. Hazel sold 18 cups + gave away 9 cups + drank 1 cup = 28 cups. Since Hazel sold half her lemonade to a construction crew, that means the 28 cups she sold to kids on bikes, gave away to friends and drank herself are the other half, so she sold 28 cups to the construction crew. In all, Hazel sold 28 + 28 = 56 cups of lemonade.
The answer: 56
Reverse engineering the question: Hazel put up a lemonade stand. She sold half her lemonade to a construction crew. She sold 18 cups to kids on bikes. She gave away half that amount to her friends. Then she drank the last cup of lemonade herself. How many cups of lemonade did Hazel make?


Reasoning and answer: He spends 5 minutes ironing his shirt and 3 minutes ironing his pants so that's 5 + 3 = 8 minutes. He does this every day for 5 days so that's 5 * 8 = 40 minutes. After 4 weeks, Hayden has spent 4 * 40 = 160 minutes ironing his clothes.
The answer: 160
What was the question?
Question: Before work, Hayden spends 5 minutes ironing his button-up shirt and 3 minutes ironing his pants. He does this 5 days a week. How many minutes does he iron over 4 weeks?


If Kimiko is 26 years old, Kayla, who is half her age, is 26 / 2 = 13 years old. Sine the minimum driving age is 18, Kayla will have to wait for 18 - 13 = 5 more years to start driving.
The answer: 5
Reverse engineering the question: How long is it before Kayla can reach the minimum age of driving of her state, which is 18, if she is currently half the age of her sister Kimiko who is 26 years old?


Reasoning and answer: The hotel has in total 10 floors * 10 rooms / floor = 100 rooms. One floor is unavailable, so Hans could be checked into 100 rooms - 10 rooms = 90 available rooms.
The answer: 90
What was the question?
Question: Hans booked a room in a hotel. The hotel has 10 floors with 10 identical rooms on each floor. Because of an accident, the last floor is unavailable for the guests. Considering there are no other guests, in how many different rooms could Hans be checked in?


Reasoning and answer: Lana sold 12 muffins and has to sell 20 - 12 = 8 to hit her goal before the bake sale ends. When she sells another 4 in the afternoon Lana has 8 - 4 = 4 muffins left to sell to meet her target.
The answer: 4
What was the question?
Question:
Lana aims to sell 20 muffins at the bake sale. She sells 12 muffins in the morning. She sells another 4 in the afternoon. How many more muffins does Lana need to sell to hit her goal?