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# Duck in a River

CLMECH-EK1RJK

A duck can swim at a maximum speed of 2 m/s with respect to the surface of a calm lake.

What will be the maximum speed of the same duck with respect to water in a river flowing at 6 m/s?

Assume that the duck swims downstream.

A

$8 \space m/s$

B

$6 \space m/s$

C

$4 \space m/s$

D

$2 \space m/s$