// Example  2.13

v=115;       // Voltage
i=12;        // current  
t=6;         // Time Required
w=v*i*t;     // Energy
Rate=2.50;
Cost=w*Rate;
disp(' cost of boiler Operation is = '+string(Cost/1000)+' Rs/kwh');
     
     
     
     
     
             //  p 27      2.13