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 9
Homework Statement:

A boy is situated at point A in a river, at distance
a from the riverbank. He can swim at speed u or run at speed
v > u on the shore; water flows in the river at velocity w > u.
The boy wants to reach the point C upstream on the riverbank
with minimal time. At what distance x from point B aligned
with point A should he get out of the water?
Relevant Equations:
 I think the diagram provided is wrong the question states that he want to reach A with minimum time so he should be aligning himself on the x distance left of AB
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