A car travels from a to b 40 km/hr and returns from b to a with 60km/hr . The average speed during the whole journey is:
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the answer is very easy that 50km/hr
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From A to B speed = 40 km/hr
From B to A speed = 60 km/hr
Average speed = ( initial speed + final speed ) / 2
= ( 40 km/hr + 60 km/hr )/2
= 100 km/hr / 2
= 50 km/hr
Average speed is 50 km/hr
Hope it helps :-)
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