example 5.2   
persent of worth factor is 0.094393
annual cost excludinding interest and 
depreciation of a 		Rs30609600 
persent worth factor 		 0.094393  
present worth annual cost of a is Rs324278538 
 investement of a is 	Rs270000000 
 total persent worth of a is 	594278538

 annual cost excludinding interest and 
depreciation of b 		Rs30384600 
persent wort factor 		0.094393  
present worth annual cost of b is Rs321894885 
 investement of b is 	Rs315000000 
 total persent worth of b is 	636894885
 
annual cost excludinding interest and 
depreciation of c 		Rs30159600 
persent wort factor 		0.094393  
present worth annual cost of c is Rs319511232 
 investement of c is 	Rs360000000 
 total persent worth of c is 	679511232
 
annual cost excludinding interest and 
depreciation of utility service 	Rs45000000 
persent wort factor 			0.094393  
present worth annual cost of utility service is Rs476730641 
 investement of utility service is 		 nill 
 total persent worth of utility service is 476730641

	since the present worth of the utility service is the minimum,it is the obvious choice 
out of the other plans,plan A is the best since it has the lowest present worth