Question: An alien invades Earth. It abducts 200 people. He returns 80% of the people abducted. After that he takes 10 people to another planet. He took the rest to his home planet. How many people did he take to his home planet?
Answer: He returned 200 * .8 = 160 people. So he had 200 - 160 = 40 people. He took 10 of those to another planet so he took 40 - 10 = 30 to his home planet. The answer is 30.
[Question]Brinley's teacher took the grade six students to the San Diego Zoo to watch and learn about animals. While at the zoo, Brinley counted 100 snakes, 80 arctic foxes, and 20 leopards. She also saw ten times more bee-eaters than leopards, half as many cheetahs as snakes, and twice as many alligators as the total number of Arctic foxes and leopards. What's the total number of animals Brinley counted at the zoo?
[Answer]There were 10 * 20 = 200 more bee - eaters at the zoo. There were 1 / 2 * 100 = 50 cheetahs. The total number of foxes and leopards is 80 + 20 = 100. There were 2 * 100 = 200 alligators. The total number of animals is 200 alligators + 220 bee - eaters + 100 snakes + 80 tactic foxes + 20 leopards + 50 cheetahs = 670 animals. The answer is 670.
Q: Janet lives in a city built on a grid system. She walks 3 blocks north, then seven times as many blocks west. Then she turns around and walks 8 blocks south and twice as many blocks east in the direction of her home. If Janet can walk 2 blocks/minute, how long will it take her to get home?
A: First, find the total number of blocks south Janet is from her starting point by subtracting the blocks she walked north from the blocks she walked south: 8 blocks - 3 blocks = 5 blocks. Then find the number blocks she walked west: 3 blocks * 7 = 21 blocks. Then find the number of blocks she walked east: 8 blocks * 2 = 16 blocks. Subtract the number of blocks she walked east from the number of blocks she walked west to find how many blocks west of her starting point she is: 21 blocks - 16 blocks = 5 blocks. Add the number of blocks she needs to walk north to the number of blocks she needs to walk east: 5 blocks + 5 blocks = 10 blocks. Finally, divide the distance she needs to walk by her speed to find how long she'll spend walking: 10 blocks / 2 blocks / minute = 5 minutes. The answer is 5.
Question: Janet counts 30 crows on the powerlines and 60% more hawks than crows. How many birds does she count total?
Answer: First find how many more hawks than crows there are: 60% * 30 crows = 18 crows. Then add that number to the number of crows to find the total number of hawks: 18 crows + 30 crows = 48 crows. Then add the number of crows to the number of hawks to find the total number of birds: 48 crows + 30 crows = 78 crows. The answer is 78.
[Question]Running for 2 hours, Jonah burnt 30 calories every hour. How many more calories would he have lost if he would have run for five hours?
[Answer]When Jonah ran for 2 hours, burning 30 calories every hour, he burnt a total of 2 * 30 = 60 calories. If he had run for five hours, losing 30 calories every hour, Jonah would have burnt 5 * 30 = 150 calories. The difference in the number of calories Jonah would have burnt if he ran for five hours instead of 2 hours is 150 - 60 = 90 calories. The answer is 90.
[Question]Officer Hopps has to give out 200 tickets in May. The first 15 days he averages 8 tickets a day. How many does he have to average each day for the rest of the month to reach his required goal?
[Answer]
He has given out 120 tickets because 15 x 8 = 120. He has 16 days left to had out tickets because 31 - 15 = 16. He has to give out 80 more because 200 - 120 = 80. He has to give out 5 a day because 80 / 16 = 5. The answer is 5.