Question: Jeff was driving to the capital city to attend a conference. At first, he was driving at 80 miles/hour for about 6 hours, then the speed limit changed and he had to slow down to 60 miles/hour, and so he drove at this speed for 4 hours. Then he made a stop at a gas station. Once the car was full of gas, he drove at 40 miles/hour the rest of the trip for 2 hours. How many miles did he travel?
Answer: In the first stretch he drove 80 miles / hour x 6 hours = 480 miles. In the second stretch he drove 60 miles / hour x 4 hours = 240 miles. After the gas station he drove 40 miles / hour x 2 hours = 80 miles. In total he drove 480 miles + 240 miles + 80 miles = 800 miles. The answer is 800.
[Question]Nicki spent the last year running a lot. For the first half of the year, she ran a total of 20 miles per week. For the second half of the year, she increased the mileage to 30 miles per week. How many miles total did she run for the year?
[Answer]Each half of the year consists of 52 / 2 = 26 weeks. For the first half of the year, Nicki ran a total of 20 * 26 = 520 miles. For the second half of the year, Nicki ran a total of 30 * 26 = 780 miles. For the entire year, Nicki ran a total of 520 + 780 = 1,300 miles. The answer is 1300.
Q: The sky currently has 4 times as many cirrus clouds as cumulus clouds, and 12 times as many cumulus clouds as cumulonimbus clouds. If the sky currently has 3 cumulonimbus clouds, how many cirrus clouds are in the sky at this moment?
A: The sky has 3 * 12 = 36 cumulus clouds. The sky has 4 * 36 = 144 cirrus clouds. The answer is 144.
Question: Job is a farmer who rears cattle and grows crops. In total he has 150 hectares of land. 25 hectares are occupied by his house and farm machinery, and 15 hectares have been reserved for future expansion. 40 hectares are dedicated to rearing cattle. Assuming the rest of his land is used for crops, how many hectares of land does Job use for crop production?
Answer: Job uses 25 + 15 + 40 = 80 hectares of land for non - crop purposes. Thus he uses 150 - 80 = 70 hectares for crop production. The answer is 70.
[Question]James is a first-year student at a University in Chicago. He has a budget of $1000 per semester. He spends 30% of his money on food, 15% on accommodation, 25% on entertainment, and the rest on coursework materials. How much money does he spend on coursework materials?
[Answer]Accommodation is 15% * $1000 = $150. Food is     30% * $1000 = $300. Entertainment is  25% * $1000 = $250. Coursework materials are thus $1000 - ($150 + $300 + $250) = $300. The answer is 300.
[Question]A mum ordered 80 cupcakes for her daughter's birthday. Half of them are gluten-free. There are 24 vegan cupcakes and half of them are also gluten-free. How many are non-vegan cupcakes that also contain gluten?
[Answer]

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.
user
The gluten - free cupcakes are 80 / 2 = 40. The vegan cupcakes with gluten are 24 / 2 = 12. The non - vegan cupcakes with gluten are 40 - 12 = 28. The answer is 28.