bin runs her own hot dog stand on the U of A campus. The monthly cost of the cart rental and business permit is $1,100. Robin's contribution margin is $2.50 per hot 9 sold. She has recently added individual servings of potatos chips to her product offering. Each bag of potato chips has a contribution margin of $1.25 per beg. bin sells 8 bags of potato chips for every 12 hot dogs. What is Robin's weighted-average contribution margin per unit? How many total units much Robin sell in a month to earn a target monthly profit of $1,600 ? Of the total units needed to eam $1,600 of profit, how many are hot dogs and how many are bags of potato chips? 1. What is Robin's weighted-average contribution margin per unit? (Round the weighted-average conlribution margin per unit to the nearest cent, " XX :) 2. How many tolal units much Robin sell in a month to earn a targot monthly profit of $1,600 ? First identify the formula, then compute the breakeven point in units. (Enter docimals to two places, "XX". Round your answer to the noarest unit)