Re: A shirt factory has a six-stage manufacturing process. Each
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Updated on: 29 Aug 2006, 11:29
Tough one... thought for a while.
Max processing time = 120 mins.
Note the following deltas between the expert timing and novice timing (calculated as expert timing -novice timing) :
d1 = +15, d2 = +7, d3= +30, d4 = +20, d5= +10, d6= +10
Sum of times of all experts = 98
Excess time = 120-98 = 22 mins.
We increase the time of processing up to a max of 22 mins.
P = {e1, e2, e3, e4, e5, e6} .............. (1)
Start with all experts, and look at the delta's to replace the experts with the novices, to increase the processing time, upto a max of 22 mins.
d1 = +15, d2 = +7, d3= +30, d4 = +20, d5= +10, d6= +10
a. {n1, e2-e6} (n1=>e1 i.e. n1 replaced e1)ExcessTime: 7mins
b. {n1, n2, e3-e6} (n1=>e1, n2=> e2) ET: 0mins
c. {e1-e3, n4, e5, e6} {n4=>e4} ET: 2 mins
d. {e1, n2, e3, e4, n5, e6} {n2=>e2, n5=> e5} ET: 5 mins
e. {e1, n2, e3, e4, e5, n6} {n2=> e2, n6=>e6} ET: 5 mins
f. {e1-e4, n5, n6} {n5=>e5, n6=>e6} ET: 2 mins
g. {e1, n2, e3-e6} {n2=>e2} ET: 15mins
h. {e1-e4, n5, e6} {n5=>e5} ET: 12mins
i. {e1-e5, n6} {n6=> e6} ET : 12 mins
j. {e1-e6} ET: 22 mins <<< Thanks to Mikki!! >>>>
Total number of ways: 10 for processing in atmost 120mins
Possible # of ways = 64
Prob = 10/64= 0.16
Answer: A
Originally posted by
haas_mba07 on 29 Aug 2006, 11:22.
Last edited by
haas_mba07 on 29 Aug 2006, 11:29, edited 1 time in total.