a. Debt to equity ratio = Total debt / total equity
Total debt (other than current) = 240 + 150= 390
Total equity = 270
Debt to equity = 390/270 = 1.44
b. Long term debt = 240
Equity (long term) =270
Long term capital = 240 + 270 = 510
Long term debt to long term capital = 240/510 = 0.4706 = 47.06%
c. Working capital = current assets - current liabilities = 180-100 = $80
d. Current ratio = Current assets/ current liabilities = 180/100 = 1.8