Q: Alexander was 50 inches on his 8th birthday. If he grows 1/2 a foot a year, how many inches tall will he be on his 12th birthday?
A: He grows six inches a year because 12 x .5 = 6. He will grow 24 inches between his 8th and 12th birthday because 4 x 6 = 24. He will be 74 inches tall because 50 + 24 = 74. The answer is 74.
Question: John takes 3 days off of streaming per week. On the days he does stream, he streams for 4 hours at a time and makes $10 an hour. How much does he make a week?
Answer: He streams for 7 - 3 = 4 days a week. So he streams 4 * 4 = 16 hours a week. That means he makes 16 * 10 = $160 a week. The answer is 160.
[Question]Jackson spends 9 hours playing video games and 1/3 that much time studying. If Jackson's grade starts at 0 points and increases by 15 points for every hour he spends studying, what is his grade?
[Answer]First find how many hours he spends studying by dividing the number of hours spent gaming by 3: 9 hours / 3 = 3 hours. Then multiply that quantity by the point increase per hour to find Jackson's grade: 3 hours * 15 points / hour = 45 points. The answer is 45.
Q: Gloria wants to buy the $129,000 mountain cabin that her friend Alfonso is selling. She only has $150 in cash. She intends to raise the remaining amount by selling her mature trees for lumber. She has 20 cypress trees, 600 pine trees, and 24 maple trees. She will get $100 for each cypress tree, $300 for a maple tree, and $200 per pine tree. After paying Alfonso for the cabin, how much money will Gloria have left?
A: The cypress trees will earn Gloria 20 trees * $100 / tree = $2000. From the sale of the cypress trees, Gloria will also make 600 trees * $200 / tree = $120000. Finally, the maple trees will bring in 24 trees * $300 / tree = $7200. Combining all the amounts will give Gloria a total of $150 + $2000 + $120000 + $7200 = $129350. Subtracting the cost of the mountain cabin from the total will leave Gloria with a balance of $129350 - $129000 = $350. The answer is 350.
Question: John has a large water collection tank. The tank can hold 200 gallons. It weighs 80 pounds empty. A rainstorm fills it to 80% of capacity. If a gallon of water weighs 8 pounds, how much does it weigh now?
Answer: The tank has 200 * .8 = 160 gallons of water in it. That water weighs 160 * 8 = 1280 pounds. So in total it weighs 1280 + 80 = 1360 pounds. The answer is 1360.
Q: Jerome bought 5 new toy cars last month. This month he bought twice as many so that he has 40 toy cars now. How many toy cars did Jerome have originally?
A:
Jerome bought 5 x 2 = 10 toy cars this month. So he bought a total of 5 + 10 = 15 toy cars. Therefore, Jerome had 40 - 15 = 25 toy cars originally. The answer is 25.