6 models wearing 2 sets of bathing suits, or a total of 6 * 2 = 12 trips wearing bathing suits. 6 models wearing 3 sets of evening wear, or a total of 6 * 3 = 18 trips wearing evening wear clothes. Altogether, there will be 12 + 18 = 30 trips up and down the runway. At 2 minutes per trip, all of the trips will take 30 * 2 = 60 minutes to complete.
The answer: 60
Reverse engineering the question: The big fashion show is being planned for next week. The show includes runway models strutting up and down the runway wearing designer clothing in front of an audience. There are two parts to the show: evening wear and bathing suits. It takes a model 2 minutes to walk out to the end of the runway and back, and models take turns, one at a time, walking the runway up and back, while wearing different clothes. If there are 6 models in the show, and each model will wear two sets of bathing suits and three sets of evening wear clothing during the runway portion of the show, how long will it take, in minutes, to complete all of the runway trips during the show?


Reasoning and answer: To find the number of total bike rides, we must first determine how many times John rode his bike. We do this by performing 17 * 2 = 34 times for John. Since John's mother rode 10 times more than John did, we find her total by performing 34 + 10 = 44 times. For all three people put together then, we perform 44 + 34 + 17 = 95 times in total.
The answer: 95
What was the question?
Question: If Billy rode his bike 17 times, John rode his bike twice as many times, and their mother rode her bike 10 times more than John, how many times did they ride their bikes in total?


An adult panda will eat 138 pounds of bamboo * 7 days = 966 pounds. A baby panda will eat 50 pounds * 7 days = 350 pounds. Total the pandas will eat 966 pounds + 350 = 1316 pounds of bamboo.
The answer: 1316
Reverse engineering the question: An adult panda can eat 138 pounds of bamboo each day. A baby panda can eat 50 pounds of bamboo a day. How many pounds of bamboo will the pandas eat in a week?


Reasoning and answer: His new plan is 150 * .3 = $45 more expensive than his old plan. So his new plan is 150 + 45 = $195.
The answer: 195
What was the question?
Question: Mark gets a new phone plan that is 30% more expensive than his old plan. If his old plan was $150 a month how much does his new plan cost?


He has 2,000 pounds of fish because 10 x 200 = 2,000. He has enough for 80 customers because 2,000 / 25 = 80. 20 customers go home without any fish because 100 - 80 = 20.
The answer: 20
Reverse engineering the question: Mr. Ray has 100 customers waiting at his fish market. He has 10 tuna, each of which weighs 200 pounds. Each customer wants 25 pounds of tuna. Mr. Ray's store is first come, first served. How many customers will go home without any fish?


After using the coupon, the final price comes to 67 - 4 = 63 dollars. With three people, they each need to pay 63 / 3 = 21 dollars each.
The answer: 21
Reverse engineering the question:
Sarah, Mary, and Tuan decided to go to the restaurant for a meal. They decided to split the cost of the meal evenly. If the total price of the meal comes to $67 and they have a coupon for $4, how much does each person need to contribute to the bill?