Fleet Foot buys hiking socks for $$6$ a pair and sells them for $$10.$ Monthly fixed costs are $$10,000($for sales volumes between $0$ and $12,000$ pairs$),$ resulting in a breakeven point of $2,500$ units. Assume that Fleet Foot has been selling $8,000$ pairs of socks per month.

Read the requirements.

Requirement $4.$ To compensate for the lower sales price, Fleet Foot wants to expand its product line to include men's dress socks. Each pair will sell for $$7\mathrm{.}00$ and cost $$2\mathrm{.}75$ from the supplier. Fixed costs will not change. Fleet expects to sell four pairs of dress socks for every one pair of hiking socks $($at its new $$9$ sales price$).$ What is Fleet's weighted$-$average contribution margin per unit? Given the $4$:$1$ sales mix, how many of each type of sock will it need to sell to breakeven?

Complete the following table to compute the weighted$-$average contribution margin per unit. $($Enter all amounts to the nearest cent.$)$

$\backslash$table$[[,$Hiking socks,Dress socks,Total,$],[$Sale price per unit,$$,9\mathrm{.}00,$$$\mathrm{.}00,],[$Less: $,$ Variable cost per unit,$6\mathrm{.}00,2\mathrm{.}754,,]]$