An order for 250 bell ringers is processed on work centers 10 and 20. The setup and run times are as follows. It is decided to overlap the lot on the two work centers and to split the lot into two lots of 100 and 150. Move time between operations is 30 minutes. Work center 20 cannot be set up until the first lot arrives. Calculate the saving in manufacturing lead time.

Setup on 10 = 50 minutes Run time on 10 = 5 minutes per piece

Setup on 20 = 100 minutes Run time on 20 = 7 minutes per piece