A person travelled from his house to office at 20km/hr and office to house at 80km/hr. Then find the average speed?  Choose the correct choice from the following options
A) 32km/hr	B) 40km/hr	C) 48km/hr	D) 50km/hr	E) 62km/hr
32km/hrverage speed = (2*20*80)/(20+80)= 
<gadget id="calculator">(2*20*80)/(20+80)</gadget>
<output>32</output>
32km/hr
32km/hrnswer is 32km/hr
<result>A</result>
A person travelled from his house to office at 20km/hr and office to house at 80km/hr. Then find the average speed?