[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.

[Question]James can buy a new computer for $600 and have it last 6 years, or buy 2 used computers for $200 each that each last 3 years. How much money will he save by picking the cheaper option?
[Answer]First find the cost of the two used computers: $200 / computer * 2 computers = $400. Then subtract that cost from the cost of the new computer to find the savings: $600 - $400 = $200. The answer is 200.

[Question]Big Dig Mining Company mines three different types of ore: copper, iron, and nickel. Across all their mines, 10% of their output is nickel, 60% is iron, and the rest is copper. They mine 720 tons of nickel a day. How many tons of copper does Big Dig Mining Company mine daily?
[Answer]Let R be the total ore output of the company. Of Big Dig’s output, 100 - 10 - 60 = 30% is nickel. Since 720 is 60% of 100% of their output, 720 / R = 60 / 100. Thus, Big Dig mines R = 100 * 720 / 60 = 1200 tons of ore daily. Therefore, Big Dig mines 1200 * 30 / 100 = 360 tons of copper daily. The answer is 360.

[Question]Frank and his friends Betty and Bill went to their farm and picked oranges to eat. Betty picked 15 oranges and Bill picked 12 oranges. Frank picked three times the number that Betty and Bill picked combined. Frank then planted 2 seeds from each of his oranges into the ground and waited 20 years for each seed to turn into a beautiful orange tree. If each orange tree contains 5 oranges for Frank's son Philip to pick, how many oranges are there for Philip to pick in total?
[Answer]
Together, Betty and Bill picked 15 + 12 = 27 oranges. Frank picked 3 * 27 = 81 oranges. Frank planted 2 * 81 = 162 seeds in total, so there are 162 orange trees 20 years later. Philip can then pick 162 * 5 = 810 oranges. The answer is 810.