Power on Demand, Inc. sells two models of generators. The two product models and other relevant information is shown below in the income statements for the most recent operating year of $2023$:Power MasterSales$$350,000$Variable costs$140,000$Contribution margin $$210,000$Power Smart$$650,000-338,000$$ $312,000$Fixed costsNet incomeTotal$$1,000,000478,000522,000265,000$S$257,000$Required:$($a$)$ Determine the sales mix and contribution margin ratio for each model.$($b$)$ Calculate the company's weighted$-$average contribution margin ratio.$($c$)$ Calculate the company's breakeven point in dollars.$($d$)$ Determine the sales level, in dollars, for each model at the breakeven point.