Answer:
0.715 
Step-by-step explanation:
The Debt To equity Ratio is given as:
⇒ ( Debt ) ÷ ( Equity )
Here,
Debt = Long term liability + Total Current Liabilities  
= $90,000 + $7,200 
= $97,200
and,
Equity = Common stock + Retained earnings 
= $31,000 + $104,800 
= $135,800
Therefore, we get the 
Debt to equity ratio = $97,200 ÷ $135,800 
= 0.715