A car is moving on a straight road covers one third of the distance with a speed of 20 km/h and the rest with
a speed of 60 km/h. The average speed of the car is
(1) 40 km/h
(2) 50 km/h
(3) 36 km/h
(4) 55 km/h
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A car is moving on a straight road covers one third of the distance with a speed of 20 km/h and the rest with
a speed of 60 km/h. The average speed of the car is
(1) 40 km/h
solution
avg speed =( v1+v2)/2
=(20+60)/2
=80/2
=40 km/hr
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