Please, solve those questions and let me know about what I got wrong.

Required information [The following information applies to the questions displayed below.] Hair World Incorporated is a wholesaler of hair supplies. Hair World uses a perpetual inventory system. The following transactions (summarized) have been selected for analysis: $ 62,720 a. Sold merchandise for cash (cost of merchandise $35,277). b. Received merchandise returned by customers as unsatisfactory (but in perfect condition) for cash refund (original cost of merchandise $400). c. Sold merchandise (costing $9,880) to a customer on account with terms 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. f. Anticipate further returns of merchandise (costing $320) after year-end from sales made during the year. 430 20,800 10,400 196 440 Required: 1. Compute Net Sales and Gross Profit for Hair World. Net Sales Gross Profit 2. Compute the gross profit percentage. (Round your answer to 1 decimal place.) Gross Profit Percentage % 3. Prepare journal entries to record transactions (a)-(7. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.) No Transaction General Journal Debit Credit 1 a(1) Cash 62,720 OO Sales Revenue 62,720 2 a(2) Cost of Goods Sold 35,277 olo Inventory 35,277 3 b(1) Sales Returns and Allowances 430 Cash 430 4 4 b(2) Inventory 400 Cost of Goods Sold 400 5 c(1) Accounts Receivable 20,800 Sales Revenue 20,800 6 c(2) Cost of Goods Sold 9,880 olo Inventory 9,880 7 d Cash 10,400 OO Accounts Receivable 10,400 8 e 196 Sales Returns and Allowances Accounts Receivable 196 9 f(1) 440 Sales Returns and Allowances Accounts Receivable x 440 10 f(2) x 320 Inventory Cost of Goods Sold 320 4. Hair World is considering a contract to sell merchandise to a hair salon chain for $51,000. This merchandise will cost Hair World $33,400. What would be the increase (or decrease) to Hair World's gross profit and gross profit percentage? (Round "Gross Profit Percentage" to 1 decimal place.) Gross Profit increased by $ 17,600 37.6 X % Gross Profit Percentage decreased to