# A car travels X km at 60km per hr and then travels another 2x km at 40km/hr. find average speed for entire distance

2
Log in to add a comment

Log in to add a comment

time taken to travel 2x km= 2x/40

Total distance traveled = x+2x=3x km

Total time taken= x/60+x/20=4x/60=x/15 hrs

Average speed= 3x/(x/15)

=45 km/h

time for first=x/60

time for second=2x/40

totaltime= x/60+2x/40 =8x/120

average speed= total distance/total time taken

=3x/8x * 120=90/2

=45 km/hr