Net Profit after tax Rs. 60,000; 10% Long-term debt Rs.10,00,000; and Tax rate 40%. The net profit before interest and tax is:

Let's calculate backwards from Net Profit After Tax (PAT) to Net Profit Before Interest and Tax (EBIT):Find Net Profit Before Tax (PBT):
$$\text{PAT}=\text{PBT}\times (1-\text{Tax Rate})$$
$$60,000=\text{PBT}\times (1-0.40)=\text{PBT}\times 0.60$$
$$\text{PBT}=\frac{60,000}{0.60}=\text{Rs. }1,00,000$$
Find Interest Expense:
$$\text{Interest}=10\%\text{ of Long-term debt}=10\%\text{ of }10,00,000=\text{Rs. }1,00,000$$
Find EBIT (Net Profit Before Interest and Tax):
$$\text{EBIT}=\text{PBT}+\text{Interest}$$
$$\text{EBIT}=1,00,000+1,00,000=\text{Rs. }2,00,000$$