Question

a car travels a distance of A to B at a speed of 40 km/he.and returns to A at a speed of 30 km/hr.what is the average speed for the whole journey.what is the average velocity.

Answer 1

for this type of question we formula
2xy/x+y
where x&y are speed of going and coming
so 2×40×30/40+30
=2400/70
=34.2 km/h

Answer 2

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Hope it helps...

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