10 hamburgers x P200 = P2000, total cost = P1500, profit = P500; plan to increase production by 3 more and this will cost an additional P700. Should you increase production by 3 more hamburgers?

Suppose government has to pay P100M a year for a nuclear power plant for 20 years with an annual operating cost per year of P50M and sales of P100M. Plant life is 20 years. Should it operate the plant?

Can you please include the solution and explain it, I will rate you as you deserve, thank you sir/madam