Bluegill Company sells $45,000$ units at $$18$ per unit. Fixed costs are $$62,000,$ and operating income is $$298,000.$ Determine the $($a$)$ variable cost per unit, $($b$)$ unit contril 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

$\%$