A carcovers the 1st half of the distance between two places of 40km/h and second half at 60km/h what is the average speed of the car
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1st speed=40kmph
2nd speed=60kmph
Time1=1/2x/40=x/80
Time2=1/2x/60=x/120
Let x be the distance
AVERAGE SPEED =DISTANCE/TIME
=x/x/80+x/120
=x/3x+2x/240
=48.
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