Operations Management Harvard Case Solution & Analysis

Operations Management Case Solution

Questions and Decisions

(1) all orders are for two identical pizzas; (2) each pizza sells for $10; and (3) Annie is advertising made to order pizzas so that all activities in the process are started only after the order is received.

  1. (6 pts) Draw a process flowchart

The process flow chart for the given case is drawn below:

 

  1. (6) What is the minimum time to fill a rush order; assuming that all steps of the process are started only after the order is received? Without spending money, how can you reduce this response time?

In order to calculate the minimum time to complete a rush order with the assumptions that all the steps of the process are started only after the order is received.

SistersTime (minutes)
TASKOrderTwo Pizzas
AnnieProcessingPrepare pizza
Washing the bowl and mixing the sauce2
Prepare dough
Mixing ingredients and manual kneading3
Put the dough into pizza pan3
AmyLoading in oven1
Baking15
Pizza pan out of oven1 second
Cooling the pizza4
Finished GoodsPutting the finished good in delivery box2
SellingCharging the customer and making the order ready for pick up4
 

Total Time

 34 minutes and 1 second

 (5) What is the maximum number of orders that the take-out facility can fill per hour in steady state? Assume that there are sufficient pizza pans to ensure that no order has to wait for pans to become available. How does your answer change if the cooling time is increased from 4 to 6 minutes?

The maximum number of orders that the take-out facility can fill per hour in a steady state with the assumptions that there are sufficient pizza pans to ensure that no order has to wait for pans to become available is calculated as below:

With the help of the chart below, it can be seen that six orders of pizzas can be filled per hour.

SistersTime (minutes)
TASKOrderSix Pizzas
AnnieProcessingprepare pizza
washing the bowl and mixing the sauce4
prepare dough
mixing ingredients and manual kneading6
put the dough into pizza pan9
Amyloading in oven3
baking15
pizza pan out of oven3 seconds
cooling the pizza4
Finished Goodsputting the finished good in delivery box6
Sellingcharging the customer and making the order ready for pick up12
 Total Time 59

By changing the cooling time from 4 to 6 minutes, the results will not be changed significantly as all pizzas can be cooled at one time and the resulting time will be just the addition of 2 minutes in the 59 minutes i.e. 61 minutes.

  1. (4) If Amy calls in sick, what is the maximum number of orders that can be filled per hour? (assume that Annie will have to do everything herself)

If Amy falls sick, then the maximum number of orders that can be filled per hour with the assumptions that Annie will have to perform the entire task is approximately 4 orders, which is calculated by adding the amount of time of first two orders again................

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