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7 June, 07:20

Two boats leave the same dock in Cairo, Illinois, at the same time. One heads north on the Mississippi River whole the three heads south. The northbound boat travels 4 miles per hour. The southbound boat goes 8 miles per hour. How long will it take them to be 54 miles apart

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Answers (2)
  1. 7 June, 08:49
    0
    The time taken by them to be 54 miles apart is: 4.5 hours

    Step-by-step explanation:

    Let it takes t hours for both the boats such that they are 54 miles apart.

    The northbound boat travels 4 miles per hour.

    Hence, the distance traveled by the northbound boat is: 4t miles.

    (since the distance is the product of speed and time.

    i. e.

    Distance=Speed*Time)

    The speed of the southbound boat is: 8 miles per hour.

    This means that the distance traveled by this boat in t hours is: 8t miles

    Hence, the total distance between the two boat in t hours is:

    4t+8t=54

    i. e.

    12t=54

    i. e.

    t=54/12

    i. e.

    t=4.5 hours

    Hence, the answer is: 4.5 hours
  2. 7 June, 09:45
    0
    4.5 hours

    Step-by-step explanation:

    Every hour they grow 12 miles part.

    54/12=4.5
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