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Exercise 7-11 (Algo) Second-Stage Allocation and Margin Calculations [LO7-4, LO7-5] Foam Products, Incorporated, makes foam seat cushions for the automotive and aerospace industries. The company's activity-based costing system has four activity cost pools, which are iisted below along with their activity measures and activity rates: The company just completed a single order from Interstate Trucking for 2,600 custom seat cushions. The order was produced in three batches. Each seat cushion required 0.6 direct labor-hours. The selling price was $141.20 per unit, the direct materlals cost was $108 per unit, and the direct labor cost was $13.70 per unit. This was Interstate Trucking's only order during the year. Requlred: Calculate the customer margin on sales to Interstate Trucking for the year