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17 January, 16:34

two people begin traveling at the same time from opposite ends of a 20 mile trail. one person travels 3 miles per hour faster than the other. if they meet after 2 hours, what are the rates of the 2 people

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  1. 17 January, 18:07
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    Let us assume rate of other person = x miles per hour.

    Rate of first person is 3 miles per hours faster than other.

    Therefore, rate of first person = (x+3) miles per hour.

    Total distance between them = 20 miles.

    And total time taken by them is 2 hours.

    We know, distance, time and rate relation:

    Distance = Rate * Time.

    Therefore, distance covered by other person = x * 2 = 2x.

    Distnace covered by first person = (x+3) * 2.

    Total distance covered by both = 20 miles.

    We can setup an equation

    Total distance covered by both = Distnace covered by first person + distance covered by other person.

    2 (x+3) + 2x = 20.

    Now, we can solve the eqation for x.

    2x + 6 + 2x = 20.

    4x + 6 = 20.

    Subtracting 6 from both sides, we get

    4x + 6-6 = 20-6

    4x = 14.

    Dividing both sides by 4, we get

    x=3.5

    Rate of first person = (x+3) = 3.5+3 = 6.5 miles per hour.

    Therefore, the rate of first person is 6.5 miles per hour and rate of second person 3.5 miles per hour.
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