One turner makes 105 parts in 5 hours and the other 72 parts in 3 hours. How many parts will both turners make in 8 hours?

1. Let’s determine how many parts the first turner produces in an hour of work. To do this, the number of parts that the first turner produces in 5 hours of work is divided by the number of hours of work:
105/5 = 21 pieces.
2. Determine how many parts the second turner produces per hour of work. To do this, the number of parts that the second turner produces in 3 hours of work is divided by the number of hours of work:
72/3 = 24 parts.
3. Let’s determine how many parts the workers will make in an hour working together:
21 + 24 = 45 pieces.
4. Let’s determine how many parts they will produce in 8 hours of work:
45 * 8 = 360 parts.
Answer: Both turners will produce 360 ​​parts in 8 hours.