A car travels 50 km at a uniform speed of 50 kmph and the next 30 km at a uniform of 20 kmph,
find its average speed.
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Answer:
average speed=total distance/total time
total distance=50+30=80
total time =t1+t2
t1=distance/speed
=50/50=1hr
t2=30/20=3/2=1hr 30mins
total time=3/2+1=5/2
average speed=80*2/5
160/5
=32km/hr
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Ansh123721:
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