Question: Tim's car goes down in value by $1000 a year. He bought it for $20,000. How much is it worth after 6 years?
Answer: It went down in value 1000 * 6 = $6000. So the car is worth 20000 - 6000 = $14,000. The answer is 14000.
[Question]If Lucy would give Linda $5, Lucy would have the same amount of money as Linda. If Lucy originally had $20, how much money did Linda have at the beginning?
[Answer]After giving $5, Lucy has $20 - $5 = $15 left. Since Linda has $15 after receiving $5, then she had $15 - $5 = $10 at the beginning. The answer is 10.
Q: The length of a rectangle is four times its width. If the area is 100 m2. what is the length of the rectangle?
A: Let L be the length and W be the width of the rectangle. Hence L = 4 * W. We now use the area to write 80 = L * W. Substitute L by 4 W in the equation above 80 = 4 * W × W = 4 W^2. Solve for W and find L. 4 W^2 = 100. W^2 = 25, W = 5 and. L = 4 * 5 = 20 m. The answer is 20.
Question: Justin and Sabrina at Pine Grove Elementary have 50 pencils combined. Justin has 8 more than twice as many pencils as Sabrina. How many pencils does Sabrina have?
Answer: Let's say Sabrina has p number of pencils. If Justin has 8 more than twice as many pencils as Sabrina, he has 2 * p + 8 = 2p + 8. Together, Justin and Sabrina has p + (2p + 8) = 50. This is equal to 3p = 50 - 8. 3p = 42. The number of pencils that Sabrina has is p = 42 / 3. Sabrina has p = 14 pencils. The answer is 14.
[Question]A large puzzle costs $15. A small puzzle and a large puzzle together cost $23. How much would you pay for 1 large and 3 small puzzles?
[Answer]A small puzzle costs $23 - $15 = $8. Three small puzzles cost $8 x 3 = $24. So, 1 large and 3 small puzzles cost $24 + $15 = $39. The answer is 39.
[Question]A plant supplier was able to sell 20 pieces of orchids for $50 each and 15 pieces potted Chinese money plant for $25. The money he earned was then used to pay his two workers $40 each and to buy new pots worth $150. How much money was left from the plant supplier's earnings?
[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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The plant supplier earned $50 x 20 = $1000 for the orchids. He earned $25 x 15 = $375 for the potted Chinese money plants. So, his total earnings was $1000 + $375 = $1375. Then he paid $40 x 2 = $80 to his workers. He used a total of $80 + $150 = $230 for the worker's pay and new pots. Hence, he was left with $1375 - $230 = $1145 from his earnings. The answer is 1145.