Question

4. A bus travels a distance of 120 km with a speed of 40 km/h and returns with a speed of
30 km/h. Calculate the average speed for the entire journey.

Answer 1

Answer:

Average speed = total distance traveled (s) / total time taken (t)

total distance traveled(s)

= 120 km (for forward journey) + 120 km (for backward journey)

time for forward journey(t 1)

= 120 km / 40 km/hr

= 3 hr

time for backward journey (t 2)

= 120 km / 30 km / hr

= 4 hr

so, total time taken(t)

= t 1 + t 2

= 7 hr

so, average speed

= s/t = 240 km / 7 hr

= 34.286 km/hr

Answer 2

Answer:

HERE IS YOUR ANSWER

Explanation:

T1 = 120/40 = 3hr. Average speed = Total distance covered/Total time taken = 240/7=34.28Km/hr.

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