Reasoning and answer: The ants have 72 legs because 12 times 6 equals 72. The spiders have 64 legs because 8 times 8 equals 64. There are a total of 136 legs because 72 plus 64 equals 136.
The answer: 136
What was the question?
Question: Monroe has a collection of ants and a collection of spiders. He has 8 spiders and 12 ants. He is wondering what the number of legs of the entire collection is.


First find how much more Jerry charges to pierce one person's ears than their nose: $20 * 50% = $10. Then add that amount to the cost of nose piercing to find the total cost: $10 + $20 = $30. Then multiply that price by the number of ears he pierces to find his total earnings from ear - piercing: $30 / ear * 9 ears = $270. Then multiply the price of nose - piercing by the number of noses pierced: $20 / nose * 6 noses = $120. Then add the money from nose - piercing to the money from ear - piercing to find Jerry's total income: $120 + $270 = $390.
The answer: 390
Reverse engineering the question: Jerry charges $20 to pierce someone's nose and 50% more to pierce their ears. If he pierces 6 noses and 9 ears, how much money does he make?


Reasoning and answer: He returned 200 * .8 = 160 people. So he had 200 - 160 = 40 people. He took 10 of those to another planet so he took 40 - 10 = 30 to his home planet.
The answer: 30
What was the question?
Question: An alien invades Earth. It abducts 200 people. He returns 80% of the people abducted. After that he takes 10 people to another planet. He took the rest to his home planet. How many people did he take to his home planet?


First find Charlie's floor number by dividing Frank's floor number by 4: 16 / 4 = 4. Then add 2 to find Dennis' floor number: 4 + 2 = 6.
The answer: 6
Reverse engineering the question: Dennis lives two floors above Charlie. Charlie lives on a floor whose number is 1/4 Frank's floor number. Frank lives on the 16th floor. What floor does Dennis live on?


Reasoning and answer: Each day, the shampoo bottle goes down 1 / 2 an ounce because 1 - (1 / 2) = 1 / 2. After four days the shampoo bottle is 2 ounces lower because 4 x (1 / 2) = 2. After four days, the shampoo bottle has 8 ounces of liquid left because 10 - 2 = 8. After four days the shampoo bottle has 2 ounces of hot sauce 4 x (1 / 2) = 2. The proportion of hot sauce in the bottle is .25 because 2 / 8 = .25. The percentage of hot sauce is 25% because .25 x 100 = 25.
The answer: 25
What was the question?
Question: Adonis is playing a prank on his dad by replacing his shampoo with hot sauce. Every day, after his dad showers, Adonis replaces the shampoo with 1/2 an ounce of hot sauce. He knows his dad uses 1 oz of shampoo a day from a new 10 oz bottle that no one else uses. After 4 days, what percentage of the liquid in the bottle is hot sauce?


Reasoning and answer: He drinks 128 / 2 = 64 ounces of coffee every 4 days. That means he drinks 64 / 4 = 16 ounces of coffee a day. So he drinks 16 / 8 = 2 cups a day.
The answer: 2
What was the question?
Question:
John buys 1/2 gallon jugs of cold brew coffee every 4 days. How many cups of coffee does he drink a day?