Energy Foot buys hiking socks for $$6$ a pair and sells them for $$10.$ Monthly fixed costs are $$20,000($for sales vole between $0$ and $4,000$ pairs$),$ resulting in a breakeven point of $5,000$ units. Assume that Energy Foot has been selli $10,500$ pairs of socks per month.

Read the requirements.

Requirement $4.$ To compensate for the lower sales price, Energy 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 chan Energy expects to sell four pairs of dress socks for every one pair of hiking socks $($at its new $$9$ sales price$).$ Wha Energy'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? $($Round your answer to the nearest cent, $X$.$XX$.)$

Energy's weighted$-$average contribution margin per unit is