Question: Sally eats 2 sandwiches on Saturday and 1 sandwich on Sunday. If each sandwich uses 2 pieces of bread, how many pieces of bread does Sally eat across Saturday and Sunday?
Answer: Across Saturday and Sunday, Sally eats 2 + 1 = 3 sandwiches. Since each sandwich sues 2 pieces of bread, Sally eats 3 * 2 = 6 pieces of bread. The answer is 6.

Question: Maria gave a third of her money to her friend Isha, half of what she gave to Florence. If Florence received three times as much money as Maria's cousin Rene, and Rene received $300, how much money did Maria give her three friends?
Answer: The total amount of money that Florence received is 3 * 300 = $900, three times as much money as Rene received. Maria gave Isha half the amount of money that Florence received, which is $900 / 2 = $450. Maria gave her friends $450 + $900 + $300 = $1650. The answer is 1650.

Question: A shop is offering a discount on pens. If you buy 10 pens at the regular price, you can get the next 10 for half off. A customer came in and bought 20 pens for $30. What's the regular price of one pen in dollars?
Answer: Let p be the cost of a full - priced pen. We know that the first 10 pens are sold at the regular price, so they cost 10 * p. We also know the any pens purchased after the first 10 are half - price, so they cost (20 pens - 10 pens) * p / 2 on those. If we add the cost of the first 10 pens and the pens sold at half - price it equals the total purchase of price of $30 = 10 * p + (20 - 10) * p / 2. Thus, $30 = 10 * p + 10 * p / 2. And, $30 = 10 * p + 5 * p. So, $30 = 15 * p. Finally, p = $2. The answer is 2.

Question: Lauren sent 65 pieces of mail on Monday, 10 more pieces of mail on Tuesday than on Monday, 5 fewer on Wednesday than on Tuesday, and 15 more pieces of mail on Thursday than on Wednesday. How many pieces of mail did Lauren send?
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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Lauren sent 65 + 10 = 75 pieces of mail on Tuesday. He sent 75 - 5 = 70 pieces of mail on Wednesday. And sent 70 + 15 = 85 pieces of mail on Thursday. Therefore, he sent 65 + 75 + 70 + 85 = 295 pieces of mail. The answer is 295.