Q: Tina saved $27 in June, $14 in July, and $21 in August. Then Tina spent $5 on books and $17 on new shoes. How much money does Tina have left?
A: The total amount of money saved is $27 + $14 + $21 = $62. The total amount spent on books and new shoes is $5 + $17 = $22. Tina has $62 − $22 = $40 left. The answer is 40.
Question: Sadie has 140 math homework problems for the week. 40 percent are Algebra problems, and half of the Algebra problems are solving linear equations. How many solving linear equations problems does Sadie have to solve?
Answer: Algebra:140(.40) = 56 problems. Linear:56 / 2 = 28 problems. The answer is 28.
[Question]Annie calculated she has three times more toys than Mike, and two less than Tom. Mike has 6 toys. How many toys do Annie, Mike, and Tom have in total?
[Answer]Annie has three times more toys than Mike, which means she has 3 * 6 = 18 more toys than Mike. Annie has a total of 18 + 6 = 24 toys. Tom has two toys more than Annie, so he has 24 + 2 = 26 toys. In total Annie, Mike, and Tom have 6 + 24 + 26 = 56 toys. The answer is 56.
Q: Janet pays $40/hour for 3 hours per week of clarinet lessons and $28/hour for 5 hours a week of piano lessons. How much more does she spend on piano lessons than clarinet lessons in a year?
A: First find the total Janet spends on clarinet lessons per week: $40 / hour * 3 hours / week = $120 / week. Then find the total Janet spends on piano lessons per week: $28 / hour * 5 hours / week = $140 / week. Then subtract her weekly clarinet spending from her weekly piano spending to find the weekly difference: $140 / week - $120 / week = $20 / week. Then multiply the weekly difference by the number of weeks in a year to find the annual difference: $20 / week * 52 weeks / year = $1040 / year. The answer is 1040.
Question: When Suzy the librarian sat at her desk on Wednesday morning, she had 98 books ready for checkout. The same day, 43 books were checked out. The following day, 23 books were returned, but 5 books were checked out. On Friday, 7 books were returned. How many books did Suzy have?
Answer: When 43 books were checked out on Wednesday, Suzy remained with 98 - 43 = 55 books. After 23 books were returned on Thursday, she ended with 55 + 23 = 78 books. However, 5 books were checked out on the same day meaning that 78 - 5 = 73 books were left. After 7 books were returned on Friday, Suzy had 73 + 7 = 80 books. The answer is 80.
Q: A bookseller sells 15 books in January, 16 in February and a certain number of books in March. If the average number of books he sold per month across all three months is 16, how many books did he sell in March?
A:
He sold an average of 16 books per month across all 3 months so he must have sold a total of 3 * 16 = 48 books in those 3 months. He sold 15 + 16 = 31 in January and February. He must have sold 48 - 31 = 17 books in March. The answer is 17.