The speed of the bus going from Islamabad to Murree was 100 km/h, while the speed of the bus was 130 km/h when coming back from Murree to Islamabad. What was the average speed of is whole journey?
- 230 km/h
- 115 km/h
- 200 km/h
- None
Explanation
The speed of the bus going from Islamabad to Murree was 100 km/h,
while the speed of the bus was 130 km/h when coming back from Murree to Islamabad.
200km/h was the average speed of is the whole journey
for time using this formula
Using speed = Time/ Distance
Time= speed/ distance
for average speed in the whole journey using this formula:
Now, Average speed = Time (tot)/ Distance (tot)
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