Answer:
Upstream = 0.5 hour.
Downstream = 0.366 hour.
Step-by-step explanation:
Speed of fram in still water (u) = 2.6 mph.
Speed of water (v) = 0.4 mph .
<h3>Time taken by fran to swim 1.1 mi upstream.</h3>
Speed upstream = u - v = (2.6 - 0.4) mph = 2.2 mph
So the time taken = = 0.5 hour.
<h3>Time taken by fran to swim 1.1 mi downstream.</h3>
Speed downstream = u + v = (2.6 + 0.4) mph = 3 mph .
So the time taken = = 0.366 hour .
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