Question

A bus moves from stop ‘A to stop ‘B’ with a speed of 40 km/hr and then from stop ‘B’ to stop ‘A with a
speed of 50 km/hr. Its average speed is

Answer 1

Answer:

It's average speed is 45 kilometer per hour.

Explanation:

From stop A to stop B,

Speed (V1) of the bus = 40 km/hr

From stop B to stop A,

Speed (V2) of the bus = 50 km/hr

Therefore, Average speed = V1 + V2 / 2

= 40 + 50 / 2 = 90 / 2

= 45 km/hr (answer).

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Answer 2

Answer:

option (A).48.5km/hr is the correct answer

Explanation:

LETS SAY THE DISTANCE BETWEEN A AND B IS 120 KM.

THEN,

120/40+120/60=3+2=5 TOTAL HOURS TRAVELLING

2*120=240 KM DRIVEN

240/S=48 KPH AVERAGE