Question: John decided to start rowing around a square lake. Each side of the lake is 15 miles. Jake can row at twice the speed he can swim. It takes him 20 minutes to swim 1 mile. How long, in hours, does it take to row the lake?
Answer: The perimeter of the lake is 4 * 15 = 60 miles. He swims at a speed of 60 / 20 = 3 mph. So he rows at a speed of 3 * 2 = 6 mph. That means it takes him 60 / 6 = 10 hours to row around the lake. The answer is 10.
[Question]Bonny just bought her 13th pair of shoes, which is 5 less than twice as many pairs of shoes as Becky owns. Bobby has 3 times as many pairs of shoes as Becky has. How many shoes does Bobby have?
[Answer]Let x be the number of pairs of shoes that Becky owns. Since 13 pairs is 5 less than twice as many pairs as Becky owns, then the relationship is 2x - 5 = 13. Adding 5 to each side of the equation, we get 2x = 18. Solving for x, we get x = 9. Since Bobby has 3 times as many pairs of shoes as Becky has, then Becky has 3 * 9 = 27 pairs of shoes. The answer is 27.
Q: Brandon has been fired from half the businesses in town and has quit from a third of them. If there are 72 business in town, how many businesses can he still apply to?
A: First divide the total number of businesses by 2 to find how many businesses Brandon hasn't been fired from: 72 businesses / 2 = 36 businesses. Then divide the total number of businesses by 3 to find how many businesses Brandon quit from: 72 businesses / 3 = 24 businesses. Then subtract that number from the number of businesses he hasn't been fired from to find the number of businesses where he can still apply: 36 businesses - 24 businesses = 12 businesses. The answer is 12.
Question: Dana normally drinks a 500 ml bottle of soda each day. Since the 500 ml bottles are currently out of stock at the store, she buys a 2-liter bottle of soda instead. If Dana continues to drink 500 ml of soda each day, how long will the 2-liter bottle of soda last? There are 1,000 ml in 1 liter.
Answer: There are 2 * 1,000 ml = 2,000 ml in a 2 - liter bottle of soda. A 2 - liter bottle of soda lasts 2,000 / 500 = 4 days. The answer is 4.
[Question]Shannon bought 5 pints of frozen yogurt, two packs of chewing gum, and five trays of jumbo shrimp from The Food Place for a total of $55 If the price of a tray of jumbo shrimp is $5 and a pack of chewing gum costs half as much as a pint of frozen yogurt, what is the price of a pint of frozen yogurt?
[Answer]5 trays of jumbo shrimp cost 5 x 5 = $25. 5 pints of frozen yogurt and 2 packs of gum in total cost 55 - 25 = $30. 2 packs of gum cost as much 2 / 2 = 1 pint of frozen yogurt. Therefore 5 + 1 = 6 pints of frozen yogurt costs $30. A pint of frozen yogurt costs 30 / 6 = $5. The answer is 5.
[Question]Gerald spends $100 a month on baseball supplies. His season is 4 months long. He wants to use the months he's not playing baseball to save up by raking, shoveling, and mowing lawns. He charges $10 for each. How many chores does he need to average a month to save up for his supplies?
[Answer]

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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He needs to save up $400 because 4 x 100 = 400. He has 8 months to earn this money because 12 - 4 = 8. He needs to earn $50 a month because 400 / 8 = 50. He needs to do 5 tasks a month because 50 / 10 = 5. The answer is 5.