According to 30 / X-30 / 1.5x = 1, please write a practical problem closely related to life

According to 30 / X-30 / 1.5x = 1, please write a practical problem closely related to life

Xiao Zhang has to process 30 parts every day. Last year, he used the old machine to process. This year, he replaced the new machine. The number of parts processed by the new machine per hour is 0.5 times more than that of the old machine. After changing the new machine, Xiao Zhang can process the parts one hour ahead of time every day. Can you tell me the number of parts processed by the old machine and the new machine per hour