A car travels half the distance with constant velocity of 40 kmph and the remaining half with a constant velocity of 60 kmph. The average velocity of the car in kmph is?
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Let x be the distance travelled by the car..x/2 be half the distance now time t taken by the car with a velocity 40km/hr is x/80hr (time=distance/speed) time t taken by the car with a velocity 60km/hr is x/120 hr.
now avg velocity= x/2+x/2
x/80+x/120
= x*9600
200x
= 48km/hr
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