Question

A train travels the first 15 km at a uniform
speed of 30 km per hour, the next 75 kilometre
at a uniform speed of 20 km per hour , calculate the average
Speed for the entire train journey.​

Answer 1

Answer:

25 km/hr

Explanation:

as we know ,

average=sum of observations divide by number of observations

              30+20  divided by 2

              50 divided by 2

               25 km/hr