Truck drivers working for Juhn and Sons (see Problems 12-19 and 12-20) are paid a salary of $ 20 per hour on average. Fruit loaders receive about $ 12 per hour. Truck drivers waiting in the queue or at the loading gate are drawing a salary but are productively idle and unable to generate revenue during that time. What would be the hourly cost savings to the firm associated with employing two loaders instead of one?
In Problems 12-19, Juhn and Sons Wholesale Fruit Distributors employ one worker whose job is to load fruit on outgoing company trucks. Trucks arrive at the loading gate at an average of 24 per day, or 3 per hour, according to a Poisson distribution. The worker loads them at a rate of 4 per hour, following approximately the exponential distribution in service times.
In Problems 12-20, Juhn believes that adding a second fruit loader will substantially improve the firm’s efficiency. He estimates that a two-person crew still acting like a single-server system, at the loading gate will double the loading rate from 4 trucks per hour to 8 trucks per hour.
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