A motorist travel to a place 220 km away at an average speed of 72 km/hr and returns at 55 km/hr.His average speed for the whole jouney in km/hr is	Choose the correct choice from the following answers.
A) 65  B) 47  C) 62.36  D) 70.4  E) None of these
Explanation :   Average Speed = (2xy/x +y )km/hr =(2x72 x55/ 72+55) = 7920/127 = 62.36 km/hr.   Answer : 62.36
<result>C</result>
A motorist travel to a place 220 km away at an average speed of 72 km/hr and returns at 55 km/hr.His average speed for the whole jouney in km/hr is