Study the graph and answer the question given below:
The below line graph shows the distance travelled by both driver A and driver B at different time intervals.
NOTE: Driver A and Driver B both start driving at 08:00. (this means for driver A at the end of 09:00 the distance travelled by driver A is 50 km)
Find the average speed of driver A from the inception of driving till 12:00.
1
57.5 kmph
2
62.5 kmph
3
67.5 kmph
4
None of the above