1. Buskin's Donuts can make donuts for $0.25 each with their current equipment. They could purchase a different fryer for $12,000 which would reduce their costs to $0.20 each. Or, they could buy a bigger fryer for $42,000 and decrease their cost to $0.17 each. Find the break-even points and graph your solution. Over what output range would each option be preferred?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter9: Decision Making Under Uncertainty
Section: Chapter Questions
Problem 30P
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1. Buskin's Donuts can make donuts for $0.25 each with their
current equipment. They could purchase a different fryer for
$12,000 which would reduce their costs to $0.20 each. Or,
they could buy a bigger fryer for $42,000 and decrease their
cost to $0.17 each. Find the break-even points and graph your
solution. Over what output range would each option be
preferred?
2. Madonna's Burgers is considering making hamburger buns in-
house instead of buying them from its supplier. It has
estimated the fixed costs for a used over to be $7,000 and the
variable costs for the buns to be $0.25. It purchases buns for
$0.50 each, and there are no fixed purchase costs. Its annual
demand for buns is forecasted to be 15,000. Madonna's wants
to know how many buns it has to make to break even.
3. Josh's Hot Dogs is a one-person hot dog stand, and normally
gets about 14 customers per hour. Assuming that Josh can
serve one customer in about 3 minutes. What impact does this
have on the queuing characteristics? Specifically, the
following questions:
a. Mean number of customer in the queue
b. Mean number of customer in the system:
c. Mean waiting time in the queue:
d. Mean waiting time in the system:
Utilization factor for the system:
e.
f. Probability of more than 1 customer in the system at any
g.
given time.
Do you
think he has an acceptable queuing system?
Transcribed Image Text:1. Buskin's Donuts can make donuts for $0.25 each with their current equipment. They could purchase a different fryer for $12,000 which would reduce their costs to $0.20 each. Or, they could buy a bigger fryer for $42,000 and decrease their cost to $0.17 each. Find the break-even points and graph your solution. Over what output range would each option be preferred? 2. Madonna's Burgers is considering making hamburger buns in- house instead of buying them from its supplier. It has estimated the fixed costs for a used over to be $7,000 and the variable costs for the buns to be $0.25. It purchases buns for $0.50 each, and there are no fixed purchase costs. Its annual demand for buns is forecasted to be 15,000. Madonna's wants to know how many buns it has to make to break even. 3. Josh's Hot Dogs is a one-person hot dog stand, and normally gets about 14 customers per hour. Assuming that Josh can serve one customer in about 3 minutes. What impact does this have on the queuing characteristics? Specifically, the following questions: a. Mean number of customer in the queue b. Mean number of customer in the system: c. Mean waiting time in the queue: d. Mean waiting time in the system: Utilization factor for the system: e. f. Probability of more than 1 customer in the system at any g. given time. Do you think he has an acceptable queuing system?
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