[The following information applies to the questions displayed below.) Hair World Inc. is a wholesaler of hair supplies. Hair World uses a perpetual inventory system. The following transactions (summarized) have been selected for analysis: $75,200 a. Sold merchandise for cash (cost of merchandise $40,797). b. Received merchandise returned by customers as unsatisfactory (but in perfect condition) for cash refund (original cost of merchandise $540 ) c. Sold merchandise (costing $7,600 ) to a customer on account with teres n/60. d. Collected half of the balance owed by the customer in (c) e. Granted a partial allowance relating to credit sales the customer in (c) had not yet paid. 900 16,000 8,000 256 4. Hair World is considering a contract to sell merchandise to a hair salon chain for $21,000. This merchandise will cost Hair World $12,880. What would be the increase for decrease) to Hair World's gross profit and gross profit percentage? (Round "Gross Profit Percentage" to 1 decimal place.) Gross Profit increased Gross Profit Percentage decreased by to %