Old City Photographics (OCP) specializes in processing traditional 35 mm film negatives. OCP offers three packages to its customers. With the standard package, the customer gets a set of 6”x4” prints. The deluxe package adds to the standard package a CD-ROM of high resolution scans of the pictures. Finally, the pro package is similar to the deluxe package in that it comes with a CD-ROM, except that the customer gets a contact print rather than a set of prints. On average, OCP receives 15 jobs per hour consisting of 50 percent standard, 30 percent deluxe, and 20 percent pro.

All jobs require 2 min per unit to process the film at the processing station. Making the 6”x4” prints takes 4 min per unit at the print station. Scanning the film on to a CD-ROM takes 5 min per unit at the scanning station. Making the contact print takes 10 min per unit at the contact print station.

Required:

A. How many jobs will arrive per hour at each station?

B. Determine the bottleneck and flow rate.