solution of 8.5   
 
 load duration data is as under   
 
    250.    200.    150.    120.    100.    80.    50.    40.    20.    0.   
    1.      2.      3.      4.      6.      8.     9.     10.    11.    12.  
 
 (a)   
meanflow is 459.104938m^3-sec 
 (b)   
power delevered in 36018312kW=36018.313MW