Maths A person walks d km upstream from a certain point in a river. After covering the distance, he reaches the same point back in 5 hours 15 minutes, he travels 2d km upstream. can swim a distance of 2d km in 7 hours. How much time will it take to cover the distance in the direction of the current?
| Q.201829: A person walks d km upstream from a certain point in a river. After covering the distance, he reaches the same point back in 5 hours 15 minutes, he travels 2d km upstream. can swim a distance of 2d km in 7 hours. How much time will it take to cover the distance in the direction of the current? |
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