Question

On a 60 km track, a train travels the first 30 km with a uniform speed of 30 km/h. How fast must the train travel the next 30km so as to average 40 km/h for the entire trip?

Answer 1

Answer:

50 km /h speed is needed. so the average speed is 40km/. h

Answer 2

$\sf \pmb{Answer :}$

50 km /h speed is needed. so the average speed is 40km/. h