[Question]Manny is making lasagna for dinner with his four friends, Lisa, Raphael, Aaron, and Kai. He needs to know how many pieces to cut the lasagna into to serve it. Manny only wants one piece. Aaron doesn't like lasagna much and will probably only eat garlic bread and salad. Kai is always hungry and will eat twice as much as Manny. Raphael always eats half the amount Manny does, but his sister Lisa loves lasagna and will eat two pieces, plus any Raphael has left of his piece. How many pieces should Manny cut his lasagna into?
[Answer]Manny will eat 1 piece. Aaron will eat 0 pieces. Kai will eat twice as much as Manny, so he will eat 2 * 1 = 2 pieces. Raphael will eat half as much as Manny, so he will eat 1 * 1 / 2 = 1 / 2 piece. Lisa will eat 2 pieces plus the remainder of Raphael’s piece, so she will eat 2 + 1 / 2 = 2 1 / 2 pieces. Together, they will eat 1 + 0 + 2 + 1 / 2 + 2 1 / 2 = 1 + 2 + 3 = 6 pieces. Thus, Manny should cut his lasagna into 6 pieces. The answer is 6.
Q: Frank picked 36 apples. Susan picked 3 times as many apples as Frank. If Susan gave out half of her apples, and Frank sold a third of his, how many in total do they have left?
A: Susan picked 3 times as much as 36 which is 3 * 36 = 108 apples. She gave out half which is 108 * (1 / 2) = 54 apples. She now has 108 - 54 = 54 apples. Frank sold a third of 36 which is 36 * (1 / 3) = 12 apples. Frank now has 36 - 12 = 24 apples. Altogether they now have 54 + 24 = 78 apples. The answer is 78.
Question: Maria collects stamps and wants to enlarge her collection. She has collected 40 stamps so far and plans to have 20% more. How many stamps in total does Maria want to collect?
Answer: Maria plans on having 40 * 20 / 100 = 8 more stamps in her collection. This means she wants to have 40 + 8 = 48 stamps. The answer is 48.
[Question]Sarah's external drive showed 2.4 gigabytes free and 12.6 gigabytes used. She decided to delete a folder of size 4.6 gigabytes and store new files of 2 gigabytes. If she will transfer all her files to a new external drive of size 20 gigabytes, how many free gigabytes will the new external drive have?
[Answer]There were 12.6 - 4.6 = 8 gigabytes used after deleting some files. Then, the used space went up to 8 + 2 = 10 gigabytes after storing other files. Thus, the new 20 gigabytes external drive will have 20 - 10 = 10 gigabytes free. The answer is 10.
Q: Sienna gave Bailey half of her suckers. Jen ate half and gave the rest to Molly. Molly ate 2 and gave the rest to Harmony. Harmony kept 3 and passed the remainder to Taylor. Taylor ate one and gave the last 5 to Callie. How many suckers did Jen eat?
A: Taylor received 5 + 1 = 6 suckers. Harmony was given 3 + 6 = 9 suckers. Molly received 9 + 2 = 11 suckers from Jen. Jen originally had 11 * 2 = 22 suckers. Jen ate 22 – 11 = 11 suckers. The answer is 11.
Question: There was some money in the cookie jar. Doris spent $6 from the cookie jar. Martha spent half as much as Doris. If there were $15 left in the cookie jar, how much money, in dollars, was there in the cookie jar at first?
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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Martha spent 6 / 2 = 3 dollars. Martha and Doris spent 6 + 3 = 9 dollars. There were 15 + 9 = 24 dollars in the cookie jar at first. The answer is 24.