The sum of black and white shirts is 63 + 42 = 105. The number of jeans in the store is (2 / 3) x 105 = 70. The sum of ties and belts is 34 + 40 = 74. The number of scarfs in the store is 74 / 2 = 37. There are 70 - 37 = 33 more jeans than scarfs in the store.
The answer: 33
Reverse engineering the question: A clothing store has an inventory of 34 ties, 40 belts, 63 black shirts, and 42 white shirts. The number of jeans in the store is two-thirds of the sum of black and white shirts, and the number of scarves is half the number of the sum of ties and belts. How many more jeans are there than scarves?


Reasoning and answer: The total number of ml needed is 30 kg x 5 ml / kg = 150 ml. Each dose has to be 150 ml / 3 doses = 50 ml / dose.
The answer: 50
What was the question?
Question: A doctor needs to give medicine to a child, and he knows that he cannot give the same amount of medicine that he would give to an adult. The instructions say that for every kilogram of weight the child must be given 5 ml of medicine. The doctor knows that the child weighs 30 kilograms and that also the full dose has to be given in 3 equal parts. How many milligrams will each part of the dose be?


The boat had 20 - 3 = 17 sheep make it to shore. 3 sheep drowned, so 2 * 3 = 6 cows drowned. 10 cows on the boat - 6 drowned = 4 cows made it to the shore. 17 sheep + 4 cows + 14 dogs = 35 animals made it to shore.
The answer: 35
Reverse engineering the question: A boat carrying 20 sheep, 10 cows and 14 dogs capsized. 3 of the sheep drowned. Twice as many cows drowned as did sheep. All of the dogs made it to shore. How many total animals made it to the shore?


Reasoning and answer: There were an average of 40 + 50 = 90 apples. And, there were 30 + 40 = 70 oranges. Thus, Wendy gained 90 x $1.50 = $135 for selling apples. And, she gained an additional 70 x $1 = $70 for selling oranges. Therefore, her total sales for the day is $135 + 70 = $205.
The answer: 205
What was the question?
Question: Wendy is a fruit vendor, and she sells an apple at $1.50 each and one orange at $1. In the morning, she was able to sell an average of 40 apples and 30 oranges. In the afternoon, she was able to sell 50 apples and 40 oranges. How much are her total sales for the day?


The parking lot is 400 * 500 = 200,000. There are 200,000 * .8 = 160,000 square feet of parking space. That means he can park 16,0000 / 10 = 16000 cars.
The answer: 16000
Reverse engineering the question: James paves a new parking lot. It is 400 feet by 500 feet. Only 80% of that is useable for parking. It takes 10 square feet to park a car. How many cars can be parked?


Her recipe calls for 1 / 4 cup of juice but she wants to double that so she needs 1 / 4 + 1 / 4 = 1 / 2 cup of lime juice. 16 tablespoons are in 1 cup and she only needs 1 / 2 cup so she needs 16 * .5 = 8 tablespoons of juice. 1 key lime yields 1 tablespoon of juice and she needs 8 tablespoons so she needs 1 * 8 = 8 key limes.
The answer: 8
Reverse engineering the question:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Audrey's key lime pie calls for 1/4 cup of key lime juice but she likes to double this amount to make it extra tart. Each key lime yields 1 tablespoon of juice. There are 16 tablespoons in 1 cup. How many key limes does Audrey need?