Deepali.M

Solution w.k.t distance between the station be x km while going speed=54km/hr time taken = x/54hr while returning speed=36km/hr time taken=x/36 Total time=x/54+x/36 (2x+3x)/108 [Average speed=Total distance/Total time] =(x+x)5x/108 =2x 108/5x =216/5 =43.2...