Work station	Minutes per item	Capacity
Order Taking	1 item per min	60 min / 1 item a min = 60 items per hour
Pre- Treatment	60 min/ 56.8 items/ hour= 1.06 min/ item	90 items in 90 mins + 5 minute set up= 90/95 mins * 60 mins per hour = 56.8 items an hour
Dry cleaning	Tank Change (5 mins) + Run time (55 mins) = 60mins 90 items an hour/ 60min=1.5min/item	1.5 * 60 min = 90 items an hour
Pressing	There are 2 pressers which each press at 2.5 min. 2.5 mins per item with 2 pressers	60 min/2.5min per item= 24*2= 48 items an hour utilizing 2 pressers
Packing	0.5 mins per item	2 times a minute * 60mins = 120 items an hour
Pick up and Payment	1 min per item	1 Min per item * 60mins = 60 items per hour

1. Customers have been complaining that stains are not removed properly. So the laundry reduces the batch size in pre-treatment to 75 items. Pre-treatment still takes 90 minutes plus 5 minutes for solvent tank change. Now what is the hourly capacity of pre-treatment? How does this impact the overall capacity of the process?