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10 December, 07:44

A boat has a speed of 15 mph in calm water. It takes the boat 3 hours to travel upstream but only 2 hours to travel the same

distance downstream. Which equation can be used to find c, the speed of the current in miles per hour?

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  1. 10 December, 07:53
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    Answer: 3 (15 - c) = 2 (15 + c)

    Step-by-step explanation:

    A boat has a speed in calm water = 15 mph

    Time takes the boat to travel upstream = 3 hours

    Time takes the boat to travel downstream = 2 hours

    Let the speed of current represented by c.

    Now, upstream speed = 15-c

    Downstream speed = 15+c

    We know that

    Thus, distance covered downstream =

    Distance covered downstream =

    If they travel the same distance upstream and downstream, then we have following equation,

    3 (15 - c) = 2 (15 + c)
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