In September, Blossom Industries sold $850$ units of product. The average sales price was $$45.$ During the month, fixed costs were $$8,514$ and variable costs were $60\%$ of sales.

$($a$)$

Determine the contribution margin in dollars, per unit, and as a ratio. $($Round Contribution margin to O decimal places, e$.$g$.5,275.$ Other all answers to $2$ decimal places, eg$.52\mathrm{.}75.)$

Contribution margin $($in dollars$)$

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Unit contribution margin

$

Contribution margin ratio