Question

a person moves from a to b, (a distance of 50 M )and return back to a in one minute 40 second .what is the average speed of the person?
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Answer 1

0.02 meter per second

Answer 2

Then:

120/40 + 120/60=3+2=5 total hours traveling.

2 x 120=240 km driven

240/5=48 kph average