Ruth runs her own hot dog stand on the U of A campus. The monthly cost of the cart rental and business permit is $$1,000.$ Ruth's contribution margin is $$1\mathrm{.}00$ per hot dog sold. She has recently added individual servings of potatos chips to her product offering. Each bag of potato chips has a contribution margin of $$1\mathrm{.}00$ per bag. Ruth sells $15$ bags of potato chips for every $10$ hot dogs$1.$ What is Ruth's weighted$-$average contribution margin per unit?$2.$ How many total units much Ruth sell in a month to earn a target monthly profit of $$900?3.$ Of the total units needed to earn $$900$ of profit, how many are hot dogs and how many are bags of potato chips?$1.$ What is Ruth's weighted$-$average contribution margin per unit? $($Round the weighted$-$average contribution margin per unit to the nearest cent, $"$ XX$".)$HotdogsPotato chipsTotal in "basket"Contribution margin per unitMultiply by: Sales mix $($number of units in "basket"$)$Contribution marginWeighted$-$average contribution margin per unit$2.$ How many total units much Ruth sell in a month to earn a target monthly profit of $$900?$First identify the formula, then compute the breakeven point in units. $($Enter decimals to two places," XX$".$ Roundyour answer to the nearest unit.$)$Next