[Question]A 1165 cm long rope is cut into 154 pieces. 150 of the pieces are equally sized and the remaining pieces are 100mm each. Find the length of each of the equal pieces in millimeters.
[Answer]Each cm contains 10mm so 1165cm is 1165 * 10 = 11650mm. 154 - 150 = 4 pieces of the rope are 100mm each in length. The 4 pieces have a total length of 4 * 100 = 400mm. There is a length of 11650 - 400 = 11250mm left. 11250 mm into 150 equal pieces will give each piece as 11250 / 150 = 75mm long. The answer is 75.
Q: Davida worked 35 hours on each of Weeks 1 and 2. She worked 48 hours each of Weeks 3 and 4. How many more hours did Davida work on Weeks 3 and 4 than on Weeks 1 and 2?
A: Week 1 + Week 2 = 35 + 35 = 70 hours. Week 3 + Week 4 = 48 + 48 = 96 hours. Subtract Weeks 3 - 4 from Weeks 1 - 2 = 96 - 70 = 26. The answer is 26.
Question: Marc bought 50 episodes of the show "Friends" online. Each day Marc watches 1/10 of the episodes he bought. How many days will Marc need to finish 50 episodes of the show he bought?
Answer: Marc watches 50 * 1 / 10 = 5 episodes a day. So, he will need 50 / 5 = 10 days to finish all episodes he bought. The answer is 10.
[Question]In a car dealership with 600 cars, 60% of the cars are hybrids, and 40% of the hybrids contain only one headlight. How many of the hybrids have full headlights?
[Answer]In the car dealership with 600 cars, 60% of the cars are hybrids, meaning there are 60 / 100 * 600 = 360 hybrid cars. Out of the 360 hybrid cars, 40% contain only one headlight. a total of 40 / 100 * 360 = 144 cars. The total number of hybrid cars with full headlights is 360 - 144 = 216. The answer is 216.
Q: Since 1989, Lily has treated herself to 1 hydrangea plant, each year. Each plant costs $20.00. By 2021, how much money has Lily spent on hydrangeas?
A: She started buying plants in 1989 and it's now 2021 so she has bought these plants for 2021 - 1989 = 32 years. Each plant costs $20.00 and she has bought them for 32 years so she has spent 20 * 32 = $640.00 on hydrangeas. The answer is 640.
Question: Tony loved to solve difficult pen and paper puzzles. He did a warm-up puzzle that only took 10 minutes and after that he did 2 puzzles that each took 3 times as long. How long did he spend solving puzzles?
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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Each of the long puzzles took 3 * 10 = 30 minutes to solve. So he spent 30 * 2 = 60 minutes solving them. That means he spent 60 + 10 = 70 minutes solving puzzles. The answer is 70.