Healthy Environs Company provides cleaning services for residential and commercial customers. Following are data for the month of June: Number of customers Service revenue Variable costs 600 $ 48,000 14,000 Contribution margin 34,000 Fixed costs Operating income For each type of customer, determine both the contribution margin per customer and the contribution margin ratio. Round to two decimal places. Show your computations. What type of service is more profitable? Contribution margin per customer Residential Commercial Total 400 1,000 Residential Commercial Total contribution margin Business Segment Number of customers SX/X customers SX/X customers Business Segment Residential Commercial $ 40,000 $88,000 22,000 36,000 18,000 52,000 Contribution margin Net service revenue SX/SX SX/SX 41.000 $11,000 S X per customer S X per customer Contribution margin ratio X% X%