[Question]Micah, Dean, and Jake are all training for a marathon organized by a local NGO to support children in their town who have cancer. Micah runs 2/3 times as fast as Dean. It takes Jake 1/3 times more time to finish the marathon than it takes Mica. If Dean takes 9 hours, what's the total time the three take to complete the marathon?
[Answer]If Dean takes 9 hours to finish the marathon, it takes Micah 2 / 3 * 9 hours = 6 hours to finish the marathon. It takes Jake 1 / 3 * 6 hours = 2 more hours to finish the marathon than Micah. Jake takes a total of 6 hours + 2 hours = 8 hours to finish the marathon. Micah, Dean, and Jake take a total of 8 hours + 6 hours + 9 hours = 23 hours to finish the marathon. The answer is 23.
Q: Elizabeth has 20 dollars and wants to buy pens and pencils. Each pencil costs $1.60 and each pen cost 2 dollars. How many pencils can she buy with her 20 dollars if she wants 6 pens?
A: Elizabeth spends 6 * 2 = 12 dollars on pens. Elizabeth has 20 - 12 = 8 dollars to spend on pencils. Elizabeth can buy 8 / 1.6 = 5 pencils. The answer is 5.
Question: Sam is twice as old as Sue. Kendra is 3 times as old as Sam. If Kendra is currently 18, what will be their total age in 3 years?
Answer: Sam is currently 18 / 3 = 6 years old. Sue is currently 6 / 2 = 3 years old. In three years, Sue will be 3 + 3 = 6. In three years, Same will be 6 + 3 = 9. In three years, Kendra will be 18 + 3 = 21. Their total age in three years is 6 + 9 + 21 = 36. The answer is 36.
[Question]Rita bought 5 short dresses, 3 pairs of pants and 4 jackets from a store that sells second-hand clothes. The dresses cost $20 each, the pants cost $12, the jackets cost $30 each, and she spent an additional $5 on transportation. If she had $400 initially, how much does she have now?
[Answer]She bought 5 dresses at $20 each for a total of 5 * $20 = $100. She bought 3 pairs of pants at $12 each for a total of 3 * $12 = $36. She bought 4 jackets at $30 each for a total of 4 * $30 = $120. She spent an additional $5 on transportation for a sum total of $5 + $100 + $36 + $120 = $261. She initially had $400 so she now has $400 - $261 = $139. The answer is 139.
Q: A factory decides to stop making cars and start making motorcycles instead. When it made cars, per month, it cost $100 for materials, they could make 4 cars, and they sold each car for $50. Now that they make motorcycles it costs $250 for materials, but they sell 8 of them for $50 each. How much more profit do they make per month selling motorcycles instead of cars?
A: They sold $200 worth of cars each month because 4 x 50 = 200. They made $100 a month off cars because 200 - 100 = 100. They sold $400 worth of motorcycles each month because 8 x 50 = 400. They make $150 a month off motorcycles because 400 - 250 = 150. They make $50 more a month off motorcycles than cars because 150 - 100 = 50. The answer is 50.
Question: Martin has 18 goldfish. Each week 5 goldfish die. Martin purchases 3 new goldfish every week. How many goldfish will Martin have in 7 weeks?
Answer:
In 7 weeks 5 * 7 = 35 goldfish die. In 7 weeks, Martin purchases 3 * 7 = 21 goldfish. In 7 weeks, Martin will have 18 - 35 + 21 = 4 goldfish. The answer is 4.