Q: Carrie works for $8 an hour and 35 hours a week at her job. It’s been a month since she started working there. She has saved up all of her money because she wants to buy a bike for $400. How much money will she have left over after she buys her bike?
A: It will be easy to solve the problem by first calculating how much money she makes in a week at her job by multiplying her hourly rate by the number of hours she works in a week: $8 * 35 = $280 in a week. The weekly earnings need to be multiplied by the number of weeks in a month to get how much she made in a month: $280 * 4 = $1120. The bike’s cost must be subtracted from her earnings made in a month to get how much money is left over after purchasing the bike: $1120 - $400 = $720 is left over after purchasing her bike. The answer is 720.
Question: A river is to be used for a boat race. If each boat is 3 feet across and they must have at least 2 feet between them or the riverbank, how many boats can race in a river that is 42 feet across?
Answer: Each boat will require 3 feet across to fit itself and 2 feet space on one side for a total of 2 + 3 = 5 feet per boat. The last boat will need an additional 2 feet space on its other side, so this 2 feet should be subtracted first from the 42 feet which leaves 42 - 2 = 40 feet. 5 feet per boat on the remaining 40 feet for a total of 40 / 5 = 8 boats. The answer is 8.
[Question]The electricity price in Coco's town is $0.10 per kW. Coco's new oven has a consumption rate of 2.4 kWh (kilowatt-hours). How much will Coco pay for using his oven only if he used it for a total of 25 hours last month?
[Answer]If Coco used his oven 25 hours last month and its energy consumption is 2.4 kW per hour, then we consumed a total of 25 * 2.4 = 60 kW on his oven last month. If the price of electricity is $0.10 per kW, then 60 kW would cost = $0.10 * 60 = $6. The answer is 6.
Q: Troy's home is 75 meters away from school while Emily's home is 98 meters away from school. Troy and Emily walk to school and back home every day. How much farther does Emily walk to school and back in five days?
A: Troy walks to school and back home for a total of 75 x 2 = 150 meters every day. Emily walks to school and back home for a total of 98 x 2 = 196 meters every day. So Emily walks 196 - 150 = 46 meters farther than Troy every day. In five days, Emily walks 46 x 5 = 230 meters farther. The answer is 230.
Question: Sally earned $1000 at work last month. This month, she received a 10% raise. How much money will she make in total for the two months?
Answer: This month she will earn $1000 * (110 / 100) = $1100. In total, she will make $1000 + $1100 = $2100. The answer is 2100.
Q: Joe’s mother gave him $56 to go to the store. Joe bought 7 notebooks and 2 books. Each notebook costs $4 and each book costs $7. How much money does Joe have left?
A:

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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7 notebooks cost 7 notebooks x $4 / notebook = $28. 2 books cost 2 books x $7 / book = $14. In total Joe has spent $28 + $14 = $42. He has $56 - $42 = $14 left. The answer is 14.