Solution :
Expected sales = current sales x (1 + projected sale next year increase)
             = 5,700 x (1 + 15%)
             = $ 6555
Expected cost = current cost x (1 + projected sale next year increase)
            = 4200 x (1 + 15%)
            = $ 4830
Taxable income = 1500 x ( 1 + 15%)
              = $ 1725
Taxes (34%) Â = 510 x (1+15%)
           = $ 586.5
Net income = sales - cost - taxes
          = 6555 - 4830 - 586.5
          = $ 1138.5
Calculation of total asset :
Current asset = 3,900 x 1.15
           = $ 4485
Fixed asset  = 8100 x 1.15
           = $ 9315
Total asset = 4485 + 9315
         = $ 13800
Calculation of total liabilities
Current liabilities = 2200 x 1.15
              = $ 2530
Long term debt = $ 3,750
Equity = $ 6050 + (1138.5 x 0.50 )
     = $ 7189
Total liabilities  = $ 2530 + $ 3,750 + $ 7189
             = $ 13, 469
Therefore the external financial needed is = $ 13800 - $ 13, 469
                                    = $ 331