Question

a 10 hr trip is made at an average speed 40 m/s . if during first half of distance average speed of the bus was 30 m/s , what is the average speed for 2nd half??

Answer 1

Here we have equal distances. In such a case the average speed is given by harmonic mean of the speeds in the 2 halves.

40=(2*30*v)/(v+30)

Solve for v.

Answer 2

60 km /hr

Answer 3

You are right :)

Answer 4

Happy to see you have started your preparation! Good luck!

Answer 5

thank u :)