a car travels 20 km distance at a uniform speed of 60km/h and nexf 20 km at a uniform speed of 40km/h. find average speed of car
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average speed =total distance/total time
20km+20km/60km/h+40km/h
=40km/(100/60)hours
=(40×60/100) km/h
=(2400/100)km/h
=24km/h
20km+20km/60km/h+40km/h
=40km/(100/60)hours
=(40×60/100) km/h
=(2400/100)km/h
=24km/h
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