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1 December, 16:51

A river is flowing downstream at rate of 2 km/h. Murray can swim at a rate of 3 km/h. Murray jumps in and swims downstream for a certain distance then turns around and swims upstream back to the start. In total it takes 30 minutes. How far did Murray swim downstream?

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  1. 1 December, 16:56
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    Murray can swim 3/4 km downstream

    Step-by-step explanation:

    Since the current adds to his speed and

    then subtracts the same amount, you can

    disregard the current

    d=r*t

    Convert 15 min to hrs (time to swim downstream)

    15 (1/60) = 1/4 hours

    d=3 (1/4)

    d=3/4 km downstream.

    Hence Murray can swim 3/4 km downstream ...
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