[Question]Seven parrots and some crows are perched on a tree branch. There was a noise and the same number of parrots and crows flew away. If only 2 parrots and 1 crow are left on the tree branch now, how many birds were perched on the branch to begin with?
[Answer]The number of parrots that flew away after the noise is 7 - 2 = 5. The same number of crows (5) flew away leaving 1 crow so there were 5 + 1 = 6 crows to begin with. The total number of crows and parrots was 7 + 6 = 13. The answer is 13.
Q: Penny's canoe can carry 6 people, but if she wants to take her dog, she will only fit 2/3 of that number inside. If every person in a trip where Penny had her dog inside the canoe weighed 140 pounds, and the dog 1/4 as much weight, calculate the total weight the canoe was carrying?
A: When Penny has her dog inside the canoe, only 2 / 3 * 6 = 4 people could fit inside the canoe. If every person in a trip where Penny had her dog inside the canoe weighed 140 pounds, the total weight of people inside the canoe was 140 * 4 = 560 pounds. The dog weighs 1 / 4 * 140 = 35 pounds. On the trip, the canoe was carrying 560 + 35 = 595 pounds. The answer is 595.
Question: Jesse is desperately trying to finish a book for a school book report due on Monday so he can play this weekend. Friday afternoon, he read the first 5 chapters, which were 10, 15, 27, 12, and 19 pages, respectively, before taking a break. To his dismay, he found that he was only 1/3 of the way through the book. How many pages does he still have to read?
Answer: So far, Jesse has read 10 + 15 + 27 + 12 + 19 = 83 pages. That's 1 / 3 of the book, so the remainder of the book is twice as many pages, or 2 * 83 = 166 pages. The answer is 166.
[Question]Every tree that Bart cuts down gives him 75 pieces of firewood. If he burns 5 logs a day from November 1 through February 28, how many trees will he need to cut down?
[Answer]November has 30 days, December has 31 days, January has 31 days and February has 28 days for a total of 30 + 31 + 31 + 28 = 120 days. He burns 5 pieces of wood every day so 120 * 5 = 600 pieces of wood. Every tree he cuts down supplies 75 pieces of firewood and he will burn 600 pieces so he needs 600 / 75 = 8 trees. The answer is 8.
Q: Nina wants to buy a new video game with her allowance money. The game cost 50 dollars. Nina also has learned that there is a 10 percent sales tax. She receives 10 dollars a week as an allowance, and thinks she can save half of that. How many weeks will it take for Nina to be able to buy the new video game with her savings?
A: The 10 percent tax on 50 dollars will be 10 / 100 x 50 = 5 dollars. The cost of the game and the tax will be 50 + 5 = 55 dollars. Nina will save half of her allowance every week, or 10 / 2 = 5 dollars per week. The total cost of the game and tax, divided by Nina's weekly savings is 55 / 5 = 11 weeks. The answer is 11.
Question: Alexandra bought 8 magazines at the bookstore on Friday. On Saturday, she went back and bought 12 more. Sunday morning, she saw that the store was having a sale and she bought four times the number of magazines she did on Friday. Later that day she discovered that her dog had chewed up 4 of the magazines. How many magazines does she have now?
Answer:
By adding Friday and Saturday, Alexandra bought 12 + 8 = 20 magazines. On Sunday she buys 8 * 4 = 32 magazines. Before her dog got to them she had 12 + 8 + 32 = 52 magazines. After her dog chewed up some she had 52 - 4 = 48 magazines. The answer is 48.