ICSE Class 7 Answered
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 | 10 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 | 10 Mar, 2014, 06:02: PM
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