Figure 15-2 The following information relates to Cranmore Manufacturing:
To produce a unit of product:
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

Figure 15-2 The following information relates to Cranmore Manufacturing:
To produce a unit of product:
 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

Quizplus · Accepted Answer

- It takes 5 minutes of wait time before the cutting department begins a batch. So for the first batch, it will take 5 minutes for the cutting department to start.
- It takes 15 minutes between the cutting and welding departments. So after the first batch is cut, it will take 15 minutes for the welding department to start on that batch.
- It takes a move and pre-wait of 12 minutes between welding and polishing. So after the welding department finishes a batch, it will take 12 minutes for the polishing department to start on that batch.
- It takes a move and pre-wait of 8 minutes between polishing and finishing. So after the polishing department finishes a batch, it will take 8 minutes for the finishing department to complete that batch.
- Therefore, for each batch of 10 units, it will take a total of 5 + 15 + 12 + 8 = 40 minutes. 
- To produce the 10th unit, 1 batch of 10 units will have to be completed, which will take 40 minutes. So the total time elapsed will be 40 minutes. 
- Therefore, the correct choice is B) 65 minutes (5 minutes wait time for the first batch + 40 minutes to complete the first batch + 20 minutes wait time for the second batch).

Figure 15-2 the Following Information Relates to Cranmore Manufacturing