Suppose the master speed is 5x and the apprentice speed is 4x (because the ratio of the number of completed apprentices to the number of unfinished apprentices is 4: 1), and the number allocated to each person is y.

(y/2)/5x=(y-360)/4x

Y of the solution = 600

Therefore, this batch of parts *** 1200, the master and the apprentice each made 600.