a. Sold merchandise for cash (cost of merchandise $20,797). $ 35,200 b. Received merchandise returned by customers as unsatisfactory (but in perfect condition) for cash refund (original cost of merchandise $240 ). 400 c. Sold merchandise (costing $3,800 ) to a customer on account with terms n/60. 8,000 d. Collected half of the balance owed by the customer in (c). 4,000 e. Granted a partial allowance relating to credit sales the customer in (c) had not yet paid. 128 Hair World is considering a contract to sell merchandise to a hair salon chain for $13,000. This merchandise will cost Hair World $9,040. What would be the increase (or decrease) to Hair World’s gross profit and gross profit percentage?