Q: Karen is paddling her canoe up a river against the current. On a still pond, Karen can paddle 10 miles per hour. The river flows in the opposite direction at 4 miles per hour. If the river is 12 miles long, how many hours will it take Karen to paddle up it?
A: First find Karen's net speed by subtracting the speed of the current: 10 mph - 4 mph = 6 mph. Then divide the length of the river by Karen's speed to find how long it takes her to paddle up it: 12 miles / 6 mph = 2 hours. The answer is 2.
Question: In a week, Mortdecai collects 8 dozen eggs every Tuesday and Thursday, and he delivers 3 dozen eggs to the market and 5 dozen eggs to the mall. He then uses 4 dozen eggs to make a pie every Saturday. Mortdecai donates the remaining eggs to the charity by Sunday. How many eggs does he donate to the charity?
Answer: Mortdecai collects a total of 8x2 = 16 dozens of eggs. He sells a total of 3 + 5 = 8 dozens of eggs. So, 16 - 8 = 8 dozens of eggs are left. After using 4 dozens of eggs to make a pie, 8 - 4 = 4 dozens of eggs are left. Since there are 12 in 1 dozen, then Mortdecai donates 4 x 12 = 48 pieces of eggs to the charity. The answer is 48.
[Question]Cary is saving money to buy a new pair of shoes that cost $120. He has already saved $30. He earns $5 for every lawn he mows. If he mows 3 lawns each weekend, how many more weekends will he have to mow lawns before he can afford to buy the shoes?
[Answer]Cary needs to save an additional $120 - $30 = $90. Cary makes $5 * 3 = $15 each weekend. It will take 90 / 15 = 6 more weekends to save enough money to afford the shoes. The answer is 6.
Q: Mr. Maximilian is a dairy animal farmer and has 140 cows on his farm. Forty percent of the cows on his farm have a red spot, 25 percent of the cows without a red spot have a blue spot and the remaining cows do not have any spot. How many cows on the farm have no spot?
A: If Mr. Maximilian has 140 cows and 40% of them have red spots, then 40 / 100 * 140 = 56 cows have red spots. The number of cows with no red spot is 140 - 56 = 84 cows. Out of the 84 cows without a red spot, 25% of them have a blue spot, a total of 25 / 100 * 84 = 21 cows. The number of cows without any spot is 84 - 21 = 63 animals. The answer is 63.
Question: James can make 4 hats out of one yard of velvet. He needs three yards of velvet to make a cloak. How much velvet does he need to make 6 cloaks and 12 hats?
Answer: First find the total amount of velvet James uses on the hats: 12 hats / 4 hats / yard = 3 yards. Then find the total amount of velvet he needs to make the cloaks: 6 cloaks * 3 yards / cloak = 18 yards. Then add those two amounts to find the total amount of velvet he needs: 3 yards + 18 yards = 21 yards. The answer is 21.
Q: Alissa used discarded paper to make notepads for her friends. She would fold 5 pieces of letter-size paper 3 times then cut along the edges to form smaller note papers. She would then stack these smaller note papers and staple them together. How long would 1 notepad last if someone wrote 10 notes per day?
A:

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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Alissa folding it 3 times makes 2 × 2 × 2 = 8 pieces of note - size paper per letter - size paper. So 5 pieces of letter - size paper make 5 × 8 = 40 pieces of note - size paper. 1 note pad would last 40 ÷ 10 = 4 days if someone wrote 10 notes a day. The answer is 4.