The tool crib at a large manufacturing company is responsible for providing tools to the factory workers on demand. The tool crib has a variable demand.? Historically, its demand has ranged from 310 to 570 small tools per day with an average of 440.

?Diane, the tool crib? attendant, works eight hours a? day, five days a week. Each order is for one small tool and each small tool takes Diane 1 minute to retrieve from the bins.

What is the cycle time for an? order? (Round the final answer to the first decimal? place.)

A) 5.5 minutes per tool

B) 1 minutes per tool

C) 6.5 minutes per tool

D) 4.5 minutes per tool

'The correct answer is "C" - please explain step-by-step how to solve to that answer