Donaldsons pay $15 / hour = 15 * 7 = $105. The Mercks pay $18 / hour = 18 * 6 = $108. The Hilles pay $20 / hour = 20 * 3 = 60. The total amount Layla earned is 105 + 108 + 60 = 273. Layla earned $273 for babysitting.
The answer: 273
Reverse engineering the question: The Donaldsons pay $15 per hour for babysitting. The Merck family pays $18 per hour and the Hille family pays $20 per hour for babysitting. Layla babysat for the Donaldsons for 7 hours, the Merck family for 6 hours and the Hille family for 3 hours. How many dollars did Layla earn babysitting?


Reasoning and answer: From his second job, Mike receives $9 / hour * 12 hours = $108. He therefore earned $160 – $108 = $52 from his first job.
The answer: 52
What was the question?
Question: Mike has earned a total of $160 in wages this week. He received the wages for his first job, then later received the wages from his second job where he works 12 hours a week. If his second job pays $9 per hour then how much money, in dollars, did Mike receive from his first job?


Saturday's total was 2 * 40 - 10 = 70. Sunday's was 70 / 2 = 35. The sum is 40 + 70 + 35 = 145.
The answer: 145
Reverse engineering the question: Tameka is selling boxes of crackers for her scout troop. On Friday, she sold 40 boxes. On Saturday, she sold 10 fewer than twice that number. And on Sunday, she sold half as many as Sunday. How many boxes did she sell over the three days?


Reasoning and answer: First, we must convert the driving time of 3 hours and 15 minutes to minutes. Since there are 60 minutes in an hour, driving takes a total of 3 * 60 + 15 = 195 minutes. Next, the woman will be on the airplane for one - third of 195 minutes, or 195 / 3 = 65 minutes. Therefore, in total, the airplane trip will take the woman 10 + 20 + 65 + 10 = 105 minutes. Thus, the airplane trip is 195 - 105 = 90 minutes faster than driving herself to the interview.
The answer: 90
What was the question?
Question: A woman is trying to decide whether it will be quicker to take an airplane or drive herself to a job interview. If she drives herself, the trip will take her 3 hours and 15 minutes. If she takes an airplane, she will first need to drive 10 minutes to the airport, and then wait 20 minutes to board the plane. After that, she will be on the airplane for one-third of the time it would have taken her to drive herself before landing in the destination city. Finally, it will take her an additional 10 minutes to get off the airplane and arrive at her interview site after the plane lands. Given this information, how many minutes faster is it for her to take the airplane?


After losing 57 legos, Nellie has 380 - 57 = 323 legos. After giving her sister 24 legos Nellie has 323 - 24 = 299 legos.
The answer: 299
Reverse engineering the question: Nellie had 380 legos, but she lost 57 of them and gave her sister 24 legos. How many legos does she have now?


Basil gets 1 / 2 in the morning and 1 / 2 at bedtime so she gets 1 / 2 + 1 / 2 = 1 whole cookie. Basil also gets 2 whole cookies during the day so all total she gets 2 + 1 = 3 whole cookies. She needs cookies for 30 days and eats 3 a day so she needs 30 * 3 = 90 cookies. Her cookies come 45 per box and she needs 90 cookies so she needs 90 / 45 = 2 boxes of cookies.
The answer: 2
Reverse engineering the question:
Basil gets 1/2 of a dog cookie in the morning and before bed. She gets 2 whole cookies during the day. Basil’s cookies are packaged with 45 cookies per box. How many boxes will she need to last her for 30 days?