Question: Grace baked 4 whole pumpkin pies. She sold 1 whole pumpkin pie and gave 1 whole pumpkin pie to her friend. The remaining whole pumpkin pies were each sliced into 6 pieces. Her family ate 2/3 pieces. How many pieces of pumpkin pie were left?
Answer: Grace sold and gave a total of 1 + 1 = 2 whole pumpkin pie. Her family was left with 4 - 2 = 2 whole pumpkin pie. There were a total of 2 x 6 = 12 pieces made from the 2 whole pumpkin pie. Her family ate 12 x 2 / 3 = 8 pieces. Therefore, 12 - 8 = 4 pieces of pumpkin pie were left. The answer is 4.

Question: Ishmael, Ponce, and Jalen measured their weight and realized Ishmael was 20 pounds heavier than Ponce and that Ponce was 10 pounds lighter than Jalen. If Jalen weighed 160 pounds, calculate the average weight of the three?
Answer: Since Ponce weighs 10 pounds lighter than Jalen, he weighs 160 - 10 = 150 pounds. The sum of Jalen and Ponce's weight is 150 + 160 = 310 pounds. Ishmael is 20 pounds heavier than Ponce, meaning he weighs 150 + 20 = 170 pounds. The total weight of the three is 310 + 170 = 480 pounds. The average weight of the three is the total weight divided by their number, which totals 480 / 3 = 160 pounds. The answer is 160.

Question: Polly the parakeet tweets all day long. When she is happy, she tweets 18 times per minute. When she is hungry, she tweets 4 times per minute. And when she watches herself in the mirror, she tweets 45 times per minute. During a time period where she is happy for 20 minutes, hungry for 20 minutes, and watches her reflection for 20 minutes, what is the total number of times she will tweet?
Answer: In 20 minutes, she happy tweets for 20 * 18 = 360 times. In 20 minutes, she hungry - tweets for 20 * 4 = 80 times. In 20 minutes, she tweets at her reflection 20 * 45 = 900 times. Altogether, she tweets 360 + 80 + 900 = 1340 times. The answer is 1340.

Question: Pima invested $400 in Ethereum. In the first week, it gained 25% in value. In the second week, it gained an additional 50% on top of the previous gain. How much is her investment worth now?
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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For the first week, her investment gain is $400 * 25% = $100. This leaves her investment with a value of $400 + $100 = $500. For the second week, her investment increased by $500 * 50% = $250. Pima's investment in Ethereum is now worth a total of $500 + $250 = $750. The answer is 750.