Accounts Receivable Supplies Equipment ACCOUNE Payable Common Stock +20,000 Retained Barnings -365 Utilities expenso +6,500 Service revenue +965 +6,500 (d) +11,850 +4.600 +2,980 Service revenue Cash (a) +20,000 (b) (c) -7.250 +2,980 (1) (9) -3,450 th) -3,160 (*) --B30 13) +1.250 10.240 +680 +680 -3,450 -3, 160 Wage expense -830 Rent expensie -1,950 4.550 680 11,850 2.795 20,000 4,525 3-a. Calculate the net profit margin, expressed as a percent. (Round your answer to 1 decimal place.) Net Profit Margin % 3-b. Is NepCo more or less profitable than its competitor, which earned a not profit margin of 25.0 percent