Question

A train travels some distance with a speed of 30km/h and returns with a speed of 45km/h (along
the same path). Calculate the average speed of the train.

Answer 1

Answer:

36 km/h

Explanation:

let it travels 90 km distance with 30 km per hour and same 90 km distance with 45 km/h

so it will take 3 hours to complete 90 km by 30km/h

and 2 hours by 45km/h

now avg. speed = total distance/ total time

90+90/3+2

180/5=36 km/h hope it will be helpful