A dove flies at a speed of 40km/h for 2hrs to attend a party.Seeing that he would be late he then increases the speed to 50km/h and travel for 3 hrs. Find the average speed of the journey.

Expert Answers
jeew-m eNotes educator| Certified Educator

Distance  = speed*time

 

Distance travel at first two hours `= 40xx2 = 80km`

Distance travel at second 3 hours `= 50xx3 = 150km`

 

Average speed = (total distance)/(total time)

Average speed `= (80+150)/(3+2) = 230/5 = 46 (km)/h`

 

So the average speed of the dove is 46km/h.