[Question]John has a party and invites 30 people. Of the people he invited 20% didn't show up. 75% of the people who show up get steak and the rest get chicken. How many people ordered chicken?
[Answer]There were 30 * .2 = 6 people who didn't show up. So 30 - 6 = 24 people showed up. Of the people who showed up, 24 * .75 = 18 got steak. So 24 - 18 = 6 got chicken. The answer is 6.
Q: John decides to replace all his hats. He has enough hats to wear a different one every day for 2 weeks. If each hat costs $50 how much do his hats cost?
A: He has 2 * 7 = 14 hats. So they cost 14 * 50 = $700. The answer is 700.
Question: Every 2 years, the number of swans at Rita's pond doubles. Currently, there are 15 swans in the pond. How many swans will there be in ten years?
Answer: If currently there are 15 swans in the pond, in two years' time there will be 15 * 2 = 30 swans. In another two years, the number of swans in the pond will double to 2 * 30 = 60 swans. In another two years, the number of swans in the pond will double to 2 * 60 = 120 swans. If after 6 years there are 120 swans in the pond, in eight years times there will be 2 * 120 = 240 swans. In another two years, which is 10 years, there will be 2 * 240 = 480 swans in the pond. The answer is 480.
[Question]A zoo is arranging the layout of its animal enclosures. There are 4 tiger enclosures in a row and behind each of these are 2 zebra enclosures. There are three times as many giraffe enclosures as zebra enclosures scattered around the zoo. The tiger enclosures hold 4 tigers, the zebra enclosures hold 10 zebras and the giraffe enclosures hold 2 giraffes. If these are the only animals in the zoo, how many animals are in the zoo?
[Answer]There are twice as many zebra enclosures, so there must be 4 tiger enclosures * 2 = 8 zebra enclosures. This means there are 8 zebra enclosures * 3 = 24 giraffe enclosures. In the tiger enclosures, there are 4 tiger enclosures * 4 = 16 tigers. In the zebra enclosures, there are 8 zebra enclosures * 10 zebras = 80 zebras. In the giraffe enclosures, there are 24 giraffe enclosures * 2 giraffes = 48 giraffes. So in total, there are 16 tigers + 80 zebras + 48 giraffes = 144 animals in the zoo. The answer is 144.
Q: In the last 25 years, 60% of Scrabble champions have been women and the rest have been men. There is one champion per year. Of the men, 40% had a beard. How many men with beards have been Scrabble champion?
A: 40% of champions are men because 100 - 60 = 40. 10 champions have been men because 25 x .4 = 10. 4 champions have been men with beards because 10 x .4 = 4. The answer is 4.
Question: A bag of pistachios has 80 pistachios in it. 95 percent have shells, and 75 percent of those have shells that are opened. How many pistachios in the bag have shells and have an opened shell?
Answer:
Shells:80(.95) = 76. Opened Shells:76(.75) = 57. The answer is 57.