
 for (a)   
total annual cost Rs.30609600
investement Rs.270000000
annuity Rs35390400 
ratio of a and b 0.131076 
rate of return 11.4percent 
 for (b)   
total annual cost Rs.30384600
investement Rs.315000000
annuity Rs35615400 
ratio of a and b 0.113065 
rate of return 8.9percent 
 for (c)   
total annual cost Rs.30159600
investement Rs.360000000
annuity Rs35840400 
ratio of a and b 0.099557 
rate of return 7.6percent
saving in annual cost excluding interest and depreciation B over A 	 225000 C over A 	 225000
additional investement P is 				B over A 	 45000000 C over A 	 45000000
rate of saving to investement 				AoverB 		 0.005000 BoverC  	0.005000
rate of return on capital investement
 evidently plan A is the best 				A over B 	Negative B over C 	Negative 