Teaching Notes



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Solutions (continued)


a.

Station

Time left

Eligible

Will fit

Assign (time)

Idle







1

1.8
0.4

a

b


a

--


a (1.4)

0.4








2

1.8
1.3

0.5


b
c, d, e
c, d

b
c, d, e
--

b (0.5)
e (0.8)

0.5








3

1.8
1.1
0.5

c, d

c, g


g, f

c, d

c, g


f

d (0.7)
c (0.6)

f (0.5)


--








4

1.8

0.8


0.3

g

h


g

h


g (1.0)

h (0.5)




0.3






















1.2










b. Efficiency = 1 –

Total idle time

= 1 –

1.2

= 83.3%




CT x no. of stations

7.2






















3.

























Desired output = 4







Operating time = 56 minutes










CT =

Operating time

=

56 minutes per hr.

= 14 minutes per unit




Desired output

4 units per hr.






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