Hacky Sack wonders if it is worthwhile hiring one or two experienced and proficient sales associates to service rental shop customers. He estimates it will cost him a total of $18 per hour in wages and benefits for each associate (the same cost as for himself). From previous experience, he estimates the average waiting cost per client to be $0.35 per minute. Which of the three scenarios provides the lowest total cost per hour for Hacky Sacks shop?

Select one:

a. Just Hacky works in the store

b. Hacky hires one associate to work with him

c. Hacky hires two associates to work with him