A man goes from A to B at a speed of 35 kmph and comes back to A at a speed of 28 kmph. Find his average speed for the entire journey?  Select:	A) 38.9 kmph	B) 38.8 kmph	C) 38.1 kmph	D) 37.1 kmph	E) 37.8 kmph
Distance from A and B be 'd'   Average Speed = total distance/total time   Average Speed = (2d)/[(d/35) + (d/28]   = (2d)/[11d/140) =&gt; 38.1 kmph.   Answer:38.1 kmph
<result>C</result>
A man goes from A to B at a speed of 35 kmph and comes back to A at a speed of 28 kmph. Find his average speed for the entire journey?