clc;
v1=100;          //speed in km/hr
v2=60;         //speed in km/hr
v3=80;        //speed in km/hr
t1=2;         //time in hr
t2=2;         //time in hr
t3=1;        //time in hr
disp(((v1*t1)+(v2*t2)+(v3*t3))/(t1+t2+t3),"Velocity in km/hr = ");    //displaying result