A car can travel form A to B at a speed of 20km/hr and returns at a speed 30km/hr. The average speed of the whole journey is
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25km/hr is the correct answer
nupuroshan:
But how can
Answered by
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speed from a to b is 20km/h
speed from b to a is 30km/h
therefore average speed is (30+20)÷2
=25km/h
speed from b to a is 30km/h
therefore average speed is (30+20)÷2
=25km/h
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