Question 1202560
Some troubles with the problem's description:


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,...Bianca paddles her kayak 3.6km down the river,while pauline paddles her kayak 2450km,....
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Do they both start same place same time and go same direction?
Strange large distance that Pauline paddled.  Is it Orange River in South Africa?   So Pauline paddled the whole river, but Bianca only went a tiny fraction of that path.  (https://en.wikipedia.org/wiki/Orange_River)