Physics question. Boat crossing a river.... help please.?

anonymous

New member
A boat crossing a 241.0 m wide river is directed so that it will cross the river and land on the opposite shore directly across from the starting point. The boat has a speed of 5.60 m/s in still water and the river flows uniformly at 2.90 m/s. Calculate the time required for the boat to reach the opposite shore.

The answer is 5.03×101 sec... But i can't figure out how to get it. For some reason i keep ending up with 43.3 sec... so obviously i'm doing something wrong.
answer is 50.3 sec.
 
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