ParkerParker sells homemade knit scarves for $ 14$14 each at local craft shows. Her contribution margin ratio is 62.562.5​%. ​Currently, the craft show entrance fees cost AthenaAthena $ 700$700 per year. The craft shows are raising their entrance fees by 2020​% next year. How many extra scarves will AthenaAthena have to sell next year just to pay for rising entrance fee​ costs? Begin by identifying the general formula to compute the breakeven sales in units. ( Fixed expenses + Operating income ) / Contribution margin per unit = Breakeven sales in units Athena will have to sell extra scarves next year just to pay for rising entrance fee costs.