Susan's Cutting Station offers a new concept in haircuts; low cost and very quick. Set in a local mall, Susan's offers $15-$minute haircuts

for harried shoppers who do not have time for lengthy appointments. To ensure that the clients are in and out quickly, she schedules

her $5$ employees based on expected client traffic. Each of the employees is paid $$1270$ per month, with part of their pay coming from

client tips. Susan pays rent and overhead costs of $$2300$ per month on the facility. Because of the quick nature of the service, Susan

doesn't have time to clean combs in between clients, so she uses a new comb for each customer, at a cost of $$0\mathrm{.}65$ each. She also

provides shampoo and conditioner for each client at a cost of $$1\mathrm{.}05$ per client. The average price for a haircut is $$10.$ Susan pays herself

$$5700$ per month. What is Susan's contribution margin ratio?

$6\mathrm{.}0\%$

$78\mathrm{.}2\%$

$17\mathrm{.}0\%$

$83\mathrm{.}0\%$