A biker drives from place A to B with the uniform speed of 20km/h and return from place B to A with a uniform speed 20km/h find its avg speed..
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we know that he has first go to from A to B and then fromB to A
average speed = total distance traveled/total time taken
so, average speed = 20 + 20/ 1hr+ 1hr
=40/2hr
= 20km/h is the average speed of the biker
tanishalohiya51:
I think u r wrong
no
according to me it is right
how can u say that the biker takes 1 hr
because in both the cases he take an hour
in the question their is not written that the biker takes 1 HR to travel
it is said that 20km per hour means in an hour it takes 20km
okay thanks
I will ask to my teacher
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