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Fran swims at a speed of 2.1 ​km/h in still water. The Lazy River flows at a speed of 0.7 ​km/h. How long will it take Fran to swim 10 km​ upstream?

What is​ Fran's speed while swimming​ upstream?

1 Answer

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Answer: Fran's speed while swimming​ upstream = 1.4 km/h

Explanation:

Given: Fran's swimming speed = 2.1 ​km/h

Speed of river = 0.7 km/h

The direction against the stream is called upstream.

Speed in Upstream = Fran's swimming speed - Speed of river

= 2.1-0.7 km/h

= 1.4 km/h

hence, Fran's speed while swimming​ upstream = 1.4 km/h

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