A man can cross 10 miles distance of a river in favor of the stream in 2 hours . He can come back against the stream along the same way in 5 hours . What is the average speed, in miles per hour, for the entire trip ?
Created: 6 years ago |
Updated: 1 year ago
best des
Total distance = 10 + 10 = 20 miles
Total time required = 5 + 2 = 7 hours
Average speed = 20/7 miles per hour
Md Azizur Rahman
Founder of Satt
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