Question

A train travels at a speed of 60 km per hour for 0.52 hours at 30 km per hour for next 0.14 hours and then 70 KM for next 0.71 hours what is the average speed of the train

Answer 1

Speed of train for first 0.52 hrs = 60kmph
Distance covered = 60×0.52 = 31.2 km
Speed of train for next 0.14 hrs = 30kmph
Distance covered = 4.2 km
Distance covered in next 0.71 hrs = 70 km

Total distance = 31.2+4.2+70 = 105.4 km
Total time = 0.52+0.14+0.71 = 1.37hrs
AVERAGE SPEED = 105.4/1.37
= 76.9343