Drayton Windows is a small company that install windows. It costructure is as follow Selling price from each window installation 5 550 Variable cost of each window installation 5 Annual fixed costs $ 105,000 Use (a) the equation method and (b) the contribution method to calculate operating Income Drayton natals 3.200 windows Use (a) the Equation method to calculate operating Income of Drayton installs 3.200 windows Begin by determining the formula to calculate the operating income using the equation method. Then, calculate the operating income. Wobreviation used: FC = Fund costs. tp saling prion VCU - Variable caut per unk O Quantity of units sold) Operating income Next use (b) the contribution method to calculate operating income If Drayton Instals 3.200 windows Begin by determining the formula to calculate the operating income using the contrbution method. Then, calculate the operating income Operating income