[Question]Jonathan ran 7.5 kilometers. Mercedes ran twice that distance and Davonte ran 2 kilometers farther than Mercedes. How many kilometers did Mercedes and Davonte run in total?
[Answer]Mercedes = 2 * 7.5 = 15 km. Davonte = 15 + 2 = 17 km. 15 + 17 = 32 km. Mercedes and Davonte ran 32 km in total. The answer is 32.
Q: The average score on last week's Spanish test was 90. Marco scored 10% less than the average test score and Margaret received 5 more points than Marco. What score did Margaret receive on her test?
A: The average test score was 90 and Marco scored 10% less so 90 * .10 = 9 points lower. The average test score was 90 and Marco scored 9 points less so his test score was 90 - 9 = 81. Margret received 5 more points than Marco whose test score was 81 so she made 5 + 81 = 86 on her test. The answer is 86.
Question: Paul is collecting license plates from different states. He has plates from 40 different states. For each percentage point of total US states that he has, his parents will give him $2. How much does he earn from them?
Answer: The proportion of plates that he has out of total states is .8 because 40 / 50 = .8. He has 80% of the plates because .8 x 100 = 80. He makes $160 because 80 x 2 = 160. The answer is 160.
[Question]Jerry owes a loan shark $200. The loan shark charges Jerry 10% interest compounded monthly. (This means that every month the loan shark adds Jerry's interest amount to his loan, and the next month Jerry has to pay 10% on the new total). If Jerry doesn't make any payments, how much (in dollars) does the loan shark charge in interest the second month?
[Answer]First calculate how much the loan shark charges in interest the first month by multiplying the loan amount by the interest rate: $200 * 10% = $20. Now add the interest amount to the original amount of the loan to find Jerry's new total: $200 + $20 = $220. Now multiply the new total by 10% to find out how much Jerry owes the loan shark in interest the second month: $220 * 10% = $22. The answer is 22.
Q: Camp Cedar has 40 boys, it has 3 times as many girls. It needs 1 counselor for every 8 children. How many counselors does Camp Cedar need?
A: Camp has 3 * 40 boys = 120 girls. Camp Cedar has a total of 40 boys + 120 girls = 160 children. Camp needs 1 counselor per 8 children, so 160 children / 8 children = 20 counselors needed. The answer is 20.
Question: Christina and her friend are driving across the state. When Christina is driving the speed limit is 30 miles per hour. When her friend is driving, the speed limit is 40 miles per hour. The drive is 210 miles total. If her friend drives for 3 hours and both drive at the speed limit, how many minutes will Christina drive?
Answer:
The friend drives 40 * 3 = 120 miles. Thus, Christina drives 210 - 120 = 90 miles. Since the speed limit is 30 miles per hour when Christina is driving, she drives for 90 / 30 = 3 hours. Thus, she drives for 3 * 60 = 180 minutes. The answer is 180.