Question

A train cover a distance of 400 km in 5 hrs 40 min. In between the first and last stop it halts in for 5 min in four station. what is the average speed of the train?​

Answer 1

Answer:

56.25 km/hr.

Step-by-step explanation:

Let the speed in return journey be x km/hr.

Then speed in onward journey =100125x​=(45x​) km/hr.

Average speed =45x​+x2×45x​×x​=910x​ km/hr.

∴    (800×10x9​)=16

x=16×10800×9​=45.

Speed in onward journey =(45​×45) km/hr =56.25 km/hr.