Han Products manufactures 18,000 units of part 5-6 each year for use on its production line. At this level of activity, the cost per unit for part 5-6 is: $5.60 7.00 Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead 2.70 15.00 Total cost per part 30.30 $ An outside supplier has offered to sell 18,000 units of part 5-6 each year to Han Products for $47.00 per part. If Han Products accepts this offer, the facilities now being used to manufacture part 5-6 could be rented to another company at an annual rental of $467,600. However, Han Products has determined that two-thirds of the fixed manufacturing overhead being applied to part 5-6 would continue even if part 5-6 were purchased from the outside supplier. Required: a. Calculate the per unit and total relevant cost for buying and making the product? (Round your "per unit" answers to 2 decimal places.) Per Unit Differential Costs Make Buy 18,000 Units Make Buy Cost of purchasing Cost of making: Direct materials Direct labor Variable overhead Fixed overhead Total cost $ 0.00 $ 0.00 $ 0 $ 0 b. How much will profits increase or decrease if the outside supplier's offer is accepted? Profit would by