The master and the apprentice process a batch of parts. The apprentice completes 40% of the total. The master processes 80 more parts than the apprentice. How many masters?

The master and the apprentice process a batch of parts. The apprentice completes 40% of the total. The master processes 80 more parts than the apprentice. How many masters?

two hundred and forty

The master and the apprentice process a batch of parts, and the number of parts processed by the apprentice is 80% of that processed by the master
The master and the apprentice process a batch of parts. The number of parts processed by the apprentice is 80% of that processed by the master. If the apprentice processes 60 more parts, it will be as much as that processed by the master. How many parts has the master processed?
If you want a detailed formula, you'd better solve it by arithmetic!

60 (1-80%) = 300 (pieces)

The master and the apprentice process a batch of parts. The apprentice completes 40% of the total. The master adds 180 more parts than the apprentice. How many parts has the master processed
（） ( )
3=2—=1—
3 3
（） ( )
3=2—=1—
3 3
No!

60%*(180/(60%-40%))=540
Number of parts processed by master = 60% * total number of parts, total number of parts = number of parts made by master / proportion of parts made by master to total number
Equation: suppose the total number of parts is x.60% x-40% x = 180 x = 900, and the number of parts processed by master is 60% x = 540