Bluegill Company sells $11,300$ units at $$280$ per unit. Fixed costs are $$158,200,$ and operating income is $$1,107,400.$ Determine the $($a$)$ variable cost per unit, $($b$)$ unit contribution margin, and $($c$)$ contribution margin ratio. Round the contribution margin ratio to two decimal places.

a$.$ Variable cost per unit $

b$.$ Unit contribution margin

$ $$ per unit

c$.$ Contribution margin ratio $\%$