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Average speed = total distance /total time
Total distance = (3 x60) + (5/2 x40)
= 580 km
Total time = (3 + ½ +2 ½ )
=6 hrs
Average speed = (580/6 )
=96.67 km/h
joseph rimiru answered the question on October 10, 2017 at 13:58
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