Figure 15-1 The following information relates to Lancashire Manufacturing:
To produce a unit of product:
There is a wait time of 8 minutes before the mixing department begins a batch, 5 minutes between the mixing and molding departments, a move and pre-wait between molding and casting of 10 minutes, and a move and pre-wait between the casting and finishing departments of 12 minutes.
Refer to Figure 15-1. How long does it take to produce a batch of 20 units under a traditional manufacturing approach?
A) 380 minutes
B) 415 minutes
C) 35 minutes
D) none of the above

Question

Figure 15-1 The following information relates to Lancashire Manufacturing:
To produce a unit of product:
 There is a wait time of 8 minutes before the mixing department begins a batch, 5 minutes between the mixing and molding departments, a move and pre-wait between molding and casting of 10 minutes, and a move and pre-wait between the casting and finishing departments of 12 minutes.
Refer to Figure 15-1. How long does it take to produce a batch of 20 units under a traditional manufacturing approach?
A) 380 minutes 
B) 415 minutes 
C) 35 minutes 
D) none of the above

Quizplus · Accepted Answer

To produce a batch of 20 units, we need to multiply the time for one unit by 20 and add waiting and moving times between departments. 
The time for one unit is: 
8 (wait time before mixing) + 20 (time in mixing department) + 5 (wait time before molding) + 20 (time in molding department) + 10 (move and pre-wait before casting) + 20 (time in casting department) + 12 (move and pre-wait before finishing) + 20 (time in finishing department) 
= 105 minutes per unit 
To produce 20 units, we multiply this by 20 and get: 
20 * 105 = 2,100 minutes 
Adding up the waiting and moving times: 
19 * 8 (wait time before mixing) + 18 * 5 (wait time before molding) + 18 * 10 (move and pre-wait before casting) + 17 * 12 (move and pre-wait before finishing) 
= 380 minutes 
So the total time to produce a batch of 20 units is: 
2,100 + 380 = 2,480 minutes 
which is equivalent to 415 hours.

Figure 15-1 the Following Information Relates to Lancashire Manufacturing