Question

The distance between Delhi and Agra is 200 km A train travels the first 100 km at a speed of 50 km per hour how fast Masti train travel the next hundred kilometre so as to average 70 km per hour for the whole journey

Answer 1

Answer:

Explanation:

Avg.speed= 70KMPH

U= 50KMPH

V=????

70= 2(50)(V) /50+V

3500+70V=100V

3500=30V

V=350/30

V=11.7KMPH...