Problem 1: Little’s Law (7 points) A cell phone repair company works seven days
ID: 445342 • Letter: P
Question
Problem 1: Little’s Law (7 points)
A cell phone repair company works seven days per week and last week had the following new orders and end of day inventory levels. This company should be assumed to be operating at steady state so Little’s Law can be applied.
Orders
Ending On Hand (EOH) Orders
Sunday
422
116
Monday
521
98
Tuesday
604
107
Wednesday
552
82
Thursday
498
88
Friday
479
102
Saturday
417
93
What is the average arrival of orders per day? (2 points)
What is the average ending on hand (inventory level) per day? (2 points)
Using Little’s Law, how many hours on average did a cell phone order spend at the repair company Sunday through Saturday last week? (3 points)
Orders
Ending On Hand (EOH) Orders
Sunday
422
116
Monday
521
98
Tuesday
604
107
Wednesday
552
82
Thursday
498
88
Friday
479
102
Saturday
417
93
Explanation / Answer
Problem 1: Little’s Law (7 points) A cell phone repair company works seven days