Figure 15-2
The following information relates to Cranmore Manufacturing: To produce a unit of product:
Cutting department 5 minutes per unit
Welding department 8 minutes per unit
Polishing department 3 minutes per unit
Finishing department 4 minutes per unit
There is a wait time of 5 minutes before the cutting department begins a batch, 15 minutes between the cutting and welding departments, a move and pre-wait between welding and polishing of 12 minutes, and a move and pre-wait between the polishing and finishing departments of 8 minutes.
-Refer to Figure 15-2. If Cranmore produces in batches of 10 units, how much time would have elapsed by the time the 10th unit is produced under a manufacturing cell environment (assuming the cell is processing continuously)?
A) 60 minutes
B) 65 minutes
C) 150 minutes
D) some other amount

Question

Quizplus · Accepted Answer

To produce 10 units, we have to consider the time elapsed for each step and the wait times between them:

Time for cutting department to produce 10 units: 
(5 minutes per unit x 10 units) + 5 minutes wait time = 55 minutes

Time for welding department to produce 10 units: 
(8 minutes per unit x 10 units) + 15 minutes wait time = 95 minutes

Time for polishing department to produce 10 units: 
(3 minutes per unit x 10 units) + 12 minutes move and pre-wait time = 42 minutes

Time for finishing department to produce 10 units: 
(4 minutes per unit x 10 units) + 8 minutes move and pre-wait time = 48 minutes

Total time for producing 10 units in a manufacturing cell environment: 
55 minutes + 95 minutes + 42 minutes + 48 minutes = 240 minutes 
But the question is asking about the time elapsed after the first part is started, so we need to subtract the wait times from this total:

240 minutes - 5 minutes (cutting pre-wait) - 15 minutes (between cutting and welding) - 12 minutes (between welding and polishing) - 8 minutes (between polishing and finishing) = 200 minutes

So, the answer is B) 65 minutes (which represents the time elapsed after the first cutting operation).

Figure 15-2 the Following Information Relates to Cranmore Manufacturing: to Produce a Produce