A car covers 30 km at a uniform speed of 60 km/hr and the next 30 km at a uniform speed of 40 km/hr . find is average speed .
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Average speed=Total distance/total time
Total distance=30+30km
=60km
Total time=30/60 +30/40
=75min
=1h 15min= 1.25 hour
Average speed=60/75
=4/5 km/min
=48 km/hr
Total distance=30+30km
=60km
Total time=30/60 +30/40
=75min
=1h 15min= 1.25 hour
Average speed=60/75
=4/5 km/min
=48 km/hr
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