Reasoning and answer: Mr. Roberts will make a total payment of $30 x 12 = $360 for 12 months. Thus, the television costs $360 + $120 = $480 when not paid in cash. Therefore, Mr. Roberts can save $480 - $400 = $80 by paying cash.
The answer: 80
What was the question?
Question: Mr. Roberts can buy a television for $400 cash or $120 down payment and $30 a month for 12 months. How much can he save by paying cash?


Each bag has 24 / 4 = 6 kilos of sugar. 6 / 2 = 3 kilos of sugar falls to the ground. 24 - 3 = 21 kilos of sugar remains.
The answer: 21
Reverse engineering the question: Chelsea has 24 kilos of sugar. She divides them into 4 bags equally. Then one of the bags gets torn and half of the sugar falls to the ground. How many kilos of sugar remain?


Reasoning and answer: James delivers 10 x 20 = 200 bags a day. So, he can deliver 200 x 5 = 1000 bags in 5 days.
The answer: 1000
What was the question?
Question: James took a job delivering groceries in his neighborhood. He can carry 10 bags on each trip. If he takes 20 trips a day, how many bags does he deliver in 5 days?


From the 9th floor, the elevator went down to the 9 - 7 = 2nd floor. Then went up to the 2 + 3 = 5th floor. Then, went up to the 5 + 8 = 13th floor; hence there are 13 floors in the building.
The answer: 13
Reverse engineering the question: An elevator is on the 9th floor. It goes down 7 floors, then up 3 floors, then up 8 floors. If the elevator is on the top floor, how many floors are there in the building?


Reasoning and answer: From city A to city B, the bus carried 3 / 4 * 200 = 150 passengers. On the return trip, the bus carried 4 / 5 * 200 = 160 passengers. In total, the bus carried 160 + 150 = 310 passengers.
The answer: 310
What was the question?
Question: A bus has a capacity of 200 people. If it carried 3/4 of its capacity on its first trip from city A to city B and 4/5 of its capacity on its return trip, calculate the total number of people the bus carried on the two trips?


Reasoning and answer: If Ed has 2 dogs and 3 cats he has in total 2 + 3 = 5 pets that are not fish. If Ed has twice as many cats and dogs combined he has 2 * 5 = 10 fish. Therefore, in total Ed has 5 + 10 = 15 pets.
The answer: 15
What was the question?
Question:
Ed has 2 dogs, 3 cats and twice as many fish as cats and dogs combined. How many pets does Ed have in total?