The total distance between two stations is 570 km out of which, 224 km is covered at 56 km/hr, 210 km is covered at 70 km/hr and the remaining is covered in 3 hours. Find the average speed during the whole journey.

Asked by Topperlearning User | 10th Mar, 2014, 04:02: PM

Expert Answer:

Total journey = 570 km

Time taken to cover 224 km at 56 km/hr =

Time taken to cover 210 km at 70 km/hr =

Time taken to cover remaining journey = 3 hours

Thus, total time taken = 4 + 3 + 3 = 10 hours

Total journey = 570 km

Now, Average speed =

Answered by  | 10th Mar, 2014, 06:02: PM