Two students are 1 foot apart on a straight path. Each student starts walking away from the other at the same moment. The first student walk

Question

Two students are 1 foot apart on a straight path. Each student starts walking away from the other at the same moment. The first student walks at a rate of 3 feet per second, and the second student’s rate is 1.5 times the first student’s rate. If x represents seconds, which equation can be used to determine how long it will take for the students to be a total of 28 feet apart?

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Nem 4 years 2021-08-14T09:34:50+00:00 1 Answers 20 views 0

Answers ( )

  1. dangkhoa
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    2021-08-14T09:36:49+00:00
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    Answer:

    3x + 4.5x + 1 = 28

    3.6 seconds

    Step-by-step explanation:

    Initial distance apart = 1 foot

    Student A:

    Walk rate = 3 ft per second

    Student B:

    1.5*3 = 4.5 ft per second

    How long it will take to be a total of 28 feets apart

    Distance = speed * time

    Let time = x in seconds

    Student A distance = 3x

    Stident B distance = 4.5x

    Initial distance = 1 foot

    3x + 4.5x + 1 = 28

    7.5x = 28 – 1

    7.5x = 27

    x = 27/ 7.5

    x = 3.6 seconds

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