There are 4 * 7 = 28 days in those 4 weeks. That means he takes 28 / 2 = 14 showers. So he takes a total of 14 * 10 = 140 minutes of showers. So he uses 2 * 140 = 280 gallons of water.
The answer: 280
Reverse engineering the question: John takes a 10-minute shower every other day for 4 weeks. If his shower uses 2 gallons of water per minute. How much water does he use in those 4 weeks?


Reasoning and answer: If Grant is currently 25 years old, he will be 25 + 5 = 30 years old in five years. If 2 / 3 represents Grant's age in five years, then the fraction representing the number of years the hospital is older than Grant is 1 - 2 / 3 = 1 / 3. If 2 / 3 represents 30 years, 3 / 3, which is the fraction representing the age of the hospital, represents 3 / 3 * 30 * 3 / 2 = 45 years. Currently, the hospital is 45 - 5 = 40 years old.
The answer: 40
What was the question?
Question: In five years, Grant will be 2/3 the age of the hospital that he is hired into. If Grant is currently 25 years old, how old is the hospital now?


The discount on the shoes Marcus found is 120 * 30 / 100 = $36. That means he only had to pay 120 - 36 = $84. So Marcus was able to save 130 - 84 = $46.
The answer: 46
Reverse engineering the question: Marcus wants to buy a new pair of shoes. He decided to pay not more than $130 for them. He found a pair for $120, on which he got a discount of 30%. How much money will he manage to save by buying these shoes and not spending the assumed maximum amount?


Reasoning and answer: The shark went from 20 miles per hour to a speed of 2 * 20 = 40 miles per hour. The shark increased its speed by 40 - 20 = 20 miles per hour. Half of the shark's increase in speed is 20 / 2 = 10 miles per hour. Thus the pilot fish had increased its speed to 20 + 10 = 30 miles per hour.
The answer: 30
What was the question?
Question: Keanu was surfing towards the shore at a speed of 20 miles per hour. A shark was swimming alongside him, riding the same wave, when it doubled its speed and moved away from Keanu. There was a pilot fish swimming alongside Keanu and the shark, and when the shark increased its speed, the pilot fish also increased its speed and moved away from Keanu, but only increasing its speed by half as much as the shark had increased its speed by. What speed, in miles per hour, was the pilot fish swimming when it moved away from Keanu?


He buys 15 * 16 = 240 ounces of steak. That means he buys 240 / 12 = 20 steaks.
The answer: 20
Reverse engineering the question: Matt orders 15 pounds of beef. He cuts that into 12-ounce steaks. How many steaks does he get?


To gain entry into the strawberry fields, Sally, Jenny and Moses paid a total of 4 * 3 = 12 dollars. This means that before Miguel applied the $12 discount, the cost was 128 + 12 = 140 dollars. We get the weight by dividing the cost by the price of strawberries per pound, 140 / 20 = 7 pounds.
The answer: 7
Reverse engineering the question:
When the strawberries at Fruity Farm are ready for harvest, Miguel charges each interested picker $4 to access the strawberry fields. Once there, people pick as many strawberries as they wish, and then take them to Miguel for weighing and pricing. This year, the standard price of a pound of strawberries is $20. Miguel is a very generous man. He deducts the entrance charge from the cost of the harvest. Sally, Jenny and Moses have just finished their strawberry picking and are headed home. They paid $128 for their harvest. How many pounds of strawberry did they pick?