Question: Thomas, Toby, and Rebecca worked a total of 157 hours in one week. Thomas worked x hours. Toby worked 10 hours less than twice what Thomas worked, and Rebecca worked 8 hours less than Toby. How many hours did Rebecca work?
Answer: Toby: 2x - 10. Rebecca: (2x - 10) - 8 = 2x - 18. Total:2x - 10 + 2x - 18 + x = 157. 5x - 28 = 157. 5x = 185. x = 37 hours. Rebecca:2(37) - 18 = 56 hours. The answer is 56.
[Question]Andy bakes and sells birthday cakes. To make two cakes he spends $12 on ingredients, and $1 on packaging for each cake. Andy sells each cake for $15. How much money does Andy make for each cake?
[Answer]Spending $12 on ingredients for 2 cakes, he spends 12 / 2 = $6 on ingredients per cake. Adding the cost of packaging, he spends 6 + 1 = $7 per cake. Selling each cake for $15, Andy's profit is 15 - 7 = $8 per cake. The answer is 8.
Q: Josue planted a tree in his backyard that grows at the rate of 2 feet per week. If the tree is currently 10 feet tall, what would be the tree's total height after 4 months (assuming each month is 4 weeks long)?
A: Since a month has four weeks, the tree will increase its height by 2 feet for 4 * 4 = 16 weeks after four months of growing. Since the tree grows at 2 feet per week, after 16 weeks, the tree would have increased its height by 2 * 16 = 32 feet. If the tree is currently 10 feet tall, its height after four months will be 10 + 32 = 42 feet. The answer is 42.
Question: James streams on twitch. He had 150 subscribers and then someone gifted 50 subscribers. If he gets $9 a month per subscriber how much money does he make a month?
Answer: He now has 150 + 50 = 200 subscribers. So he makes 200 * 9 = $1800 a month. The answer is 1800.
[Question]John buys 3 boxes of burritos. He gives away a 3rd of them to his friend. Each box has 20 burritos. He eats 3 burritos per day for 10 days. How many burritos does he have left?
[Answer]He gave 3 / 3 = 1 box away. So he has 3 - 1 = 2 boxes. So he got 2 * 20 = 40 burritos. He ate 3 * 10 = 30 burritos. So he has 40 - 30 = 10 burritos left. The answer is 10.
[Question]Jonas is a book collector. He has so many books he is converting his third bedroom into a library. This room has 400 square feet of space. He plans to put several bookshelves in the room and each bookshelf takes up 80 square feet of space. If he reserves 160 square feet of space to use for a desk and some walking space, how many shelves can he put in the room?
[Answer]
If he reserves 160 sq. ft. of space for a desk and some walking space, then he will have 400 - 160 = 240 sq. ft. of space remaining. If each bookshelf takes up 80 sq. ft. of space, then 240 sq ft can contain 240 / 80 = 3 bookshelves. The answer is 3.