Question:
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?
7/10 | |
7/20 | |
20/7 | |
20/7 | |
10/7 |
Answer:
20/7
Last Updated:
08/11/2021 - 03:30