OPIM 101 - Spring 2012
Recitation 1 Exercise
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SOLUTIONS
Section #
(201,202,…,214):
_____________
Instructor (circle):
Balas
Fishman
Horowitz
Saunders
Shah
Zhang
PennCard Last Name:
PennCard First Name:
PennId:
Place your answers in the boxes provided.
Q1 A Rhode Island company produces communion wafers for churches around the country and the
world.
The little company produces a lot of wafers – more than 400 million per year.
When in
production, the process produces wafers at the rate of 90 per second.
During this production process
the wafers must spend 15 minutes passing through a cooling tube.
How many wafers does the cooling
tube hold on average when in production (in other words, don’t count the time they are not in
production)? Assume the company produces 250 days a year and 6 hours during each of those days.
I
= R * T
R = 90/sec
T = 15 * 60 = 900 seconds
I
= 90 *900 = 81,000
Q2 Suppose a retailer’s annual inventory turns is 4.5. What is its days-of-supply of inventory?
Assume
365 days per year.
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