Question: Roselyn gives Mara three times as many books as she gives Rebecca and remains with 60 books. If Rebecca received 40 books, how many books did Roselyn have before?
Answer: If Roselyn gave Rebecca 40 books, and Mara was given three times as many books, Mara has 3 * 40 = 120 books. Rebecca and Mara's total number of books is 120 + 40 = 160 books. If Roselyn gave Mara and Rebecca her books, which is 160, then she initially had 60 + 160 = 220 books. The answer is 220.
[Question]John ends up damaging his hearing aids. He needs to replace both of them. They cost $2500 each. Insurance covers 80% of the cost. How much does he personally have to pay?
[Answer]The cost of the hearing aids is $2500 * 2 = $5000. So insurance covers $5000 * .8 = $4000. That means it cost him $5000 - $4000 = $1000. The answer is 1000.
Q: A box of six popsicles was left out in the sun and is slowly melting. Every time a popsicle melts the remaining popsicles melt twice as fast as the previous one. How many times faster than the first popsicle does the last popsicle’s remains melt?
A: The remains of the second popsicle melt 2 * 1 = 2 times as fast as the first. The remains of the third popsicle melt 2 * 2 = 4 times as fast as the first. The remains of the fourth popsicle melt 2 * 4 = 8 times as fast as the first. The remains of the fifth popsicle melt 2 * 8 = 16 times as fast as the first. The remains of the sixth popsicle melt 2 * 16 = 32 times as fast as the first popsicle. The answer is 32.
Question: Brandon sold 86 geckos last year. He sold twice that many the year before. How many geckos has Brandon sold in the last two years?
Answer: Last year: 86 geckos. 2 years ago: 86(2) = 172. Total number of geckos sold 86 + 172 = 258 geckos. The answer is 258.
[Question]The United States flag has 50 stars, one for every state in the union, and 13 stripes, which represent the original 13 colonies. Pete, inspired by history, decided to make his own flag. He used circles, to represent how many scoops of ice cream he can consume in one sitting, and squares, to represent the number of brownies he has hidden beneath his bed. For circles, he used 3 less than half the number of stars on the US flag, and for squares, he used six more than twice the number of stripes on the US flag. What is the combined total number of circles and squares on Pete's flag?
[Answer]Half the number of stars on the US flag is 50 / 2 = 25. Three less than half the number of stars on the US flag is 25 - 3 = 22 circles. Twice the number of stripes on the US flag is 13 * 2 = 26. Six more than twice the number of stripes on the US flag is 26 + 6 = 32 squares. In total, Pete's flag has 22 + 32 = 54 circles and squares. The answer is 54.
[Question]The sewers in Middleton can handle 240,000 gallons of run-off. Each hour of rain produces 1000 gallons of runoff. How many days of rain can the sewers handle before they overflow?
[Answer]
First find how many hours of runoff the sewers can handle: 240,000 / 1000 gallons / hour = 240 hours. Then divide that time by the number of hours per day to find how many days of rain the sewers can handle: 240 hours / 24 hours / day = 10 days. The answer is 10.