The distance between Delhi and Agra is 200 km A train travels the first hundred kilometres at a speed of 50 km per hour how fast must the train travel the next hundred kilometres so as to average 70 km per hour for the whole journey

In this  why can't we use the formula

Average speed = initial speed + final speed / 2

Asked by ayushsinghal6789 | 7th Jun, 2020, 12:21: PM

Expert Answer:

 
Thus, the train must travel the next 100 km with speed of 116.67 km/h

Answered by Shiwani Sawant | 7th Jun, 2020, 01:58: PM