A person covers a distance of first of 120 metres at a speed of 4 m/sec, next 120 metres at 5 m/sec and final distance of 120 metres at 6 m/sec, then during the complete journey, find his average speed in km/hour.
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Step-by-step explanation:
the average speed =total distance covered /total speed
so 360/4+5+6=
360/15=24
average speed is 24
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hopefully it will help you buddy
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