a car drives from place a to b at a uniform speed of 30 kms and returns to place a at a uniform speed of 20 km/hr. what is the average speed
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Let the distance be 'x'
Then total distance = x + x = 2x
Time = x/20 + x/30
= 5x/60
We know,
Average Speed = Total Distance/Total time
∴ 2x/(2x/60)
⇒ 2x × 60/5x
⇒ 24 km/hr ←Ans
Good Studies!
Then total distance = x + x = 2x
Time = x/20 + x/30
= 5x/60
We know,
Average Speed = Total Distance/Total time
∴ 2x/(2x/60)
⇒ 2x × 60/5x
⇒ 24 km/hr ←Ans
Good Studies!
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