Question

The repair shop owner feels that he is losing many customers needing routine repair because of the long wait. He dedicates one hoist for routine repair and one for major repairs. A study indicates that routine repairs are processed at the rate of 3 per hour and major repairs at the rate of 1 per hour. There are now 5 people waiting on average for routine repairs and 3 waiting on average for major repairs

Answer 1

This question highlight regarding finding out the Flow time which were given as - Inventory / Time.

The repair shop is now dedicates that one elevator for routine and one for key. Now compute the Flow time for both cases.

Case 1: - For Routine Repairs: -

Inventory = 5

Time = 3 per hour.

Therefore, the Flow Time = Inventory / Time = 5/3 = 1.67 hours

Thus, the cars wait time at an average of 1.67 hrs. before being served at routine repairs.

Case 2: - For Major Repairs: -

Inventory = 3

Time = 1 per hour.

Therefore, Flow Time = Inventory / Time = 3/1 = 3 hours

Thus, the cars wait time at an average of 3 hrs. before being served at major repairs.