Question

A student while going to school in a school bus, observes the average speed of the bus to be 20km/h. on his return trip along the same way, the average speed is 30km/h. What is the average speed of the bus in the entire journey?

Answer 1

Answer:

average speed =sum of all speed /n

=(20+30)/2

=25km/h

Answer 2

Answer:

Average speed of the bus is 20km/h.

Average speed while returning is 30km/h.

average speed =20+30/2

50/2=25km/h.

25km/h is the average speed of the bus in the entire journey