Q: Mary and Ann are going sledding. Mary slides down a hill that's 630 feet long at a speed of 90 feet/minute. Ann slides down a hill that's 800 feet long at a rate of 40 feet/minute. How much longer does Ann's trip take than Mary?
A: First find the total time Mary's trip takes: 630 feet / 90 feet / minute = 7 minutes. Then find the total time Ann's trip takes: 800 feet / 40 feet / minute = 20 minutes. Then subtract Mary's time from Ann's time to find the difference: 20 minutes - 7 minutes = 13 minutes. The answer is 13.
Question: There are 92 students altogether. Twenty of them ride the school bus home together, 5/8 of the remaining ride their own bike home, and the rest whose houses are near the school walk home. How many students are walking home?
Answer: If there are 92 students and 20 students take the bus home, the number of students who haven't taken the bus is 92 - 20 = 72 students. 5 / 8 of the students who didn't take the bus home ride bikes home, a total of 5 / 8 * 72 = 45 students. The number of students who neither took the bus nor biked home but walked home is 72 - 45 = 27. The answer is 27.
[Question]Ben starts each day with $50, spends $15 every day and saves the rest. After a few days, his mom doubled his total savings and his dad gave him an additional $10. If he now has $500, How many days have elapsed?
[Answer]Let the number of days be x. He saves $50 - $15 = $35 each day. After x days he had saved $35 * x = $35x. His mom doubled his savings to give $35x * 2 = $70x. His dad added $10 to give $70x + $10 = $500. Subtracting 10 from both sides of the equation formed gives $70x = 490. Dividing both sides by $70 give x = 7 days. The answer is 7.
Q: Barbie enjoys buying jewelry. One day, she bought 12 pairs of earrings, and gave half of them to Alissa, making Alissa's total number of collections to be triple the number of earrings she was given. How many earrings does Alissa have now?
A: If 1 pair of earrings equals 2 earrings, then Barbie bought 12 * 2 = 24 earrings. Half of 24 earrings is 24 / 2 = 12 earrings. If receiving 12 earrings tripled Alissa's collection, then she now has 12 * 3 = 36 earrings. The answer is 36.
Question: A porcelain vase was originally priced at $200 but went on sale for 25% off. If Donna bought the porcelain vase and paid 10% sales tax, how much did she pay in total?
Answer: Donna got $200 x 25 / 100 = $50 less for the porcelain vase. So, the porcelain vase is now $200 - $50 = $150. Donna has to pay $150 x 10 / 100 = $15 for the sales tax. Therefore, she paid $150 + $15 = $165 in total. The answer is 165.
Q: There are 192 soaps in a package. They put them in 2 big boxes. If each box contains 6 packages, how much soap do the 2 boxes contain in total?
A:
Find how many soaps are in 1 box by multiplying the number of soaps per package by the number of packages per box: 192 * 6 = 1152 soaps. Then find how many soaps 2 boxes contain by multiplying the number of boxes by the number of soaps per box: 1152 * 2 = 2304 soaps. The answer is 2304.