the odometer of a car reads 68420 km when the clock shows the time 9 am if at 9 30 am the odometer reading has changed to 68540 calculate th

Question

the odometer of a car reads 68420 km when the clock shows the time 9 am if at 9 30 am the odometer reading has changed to 68540 calculate the speed of the car in km/min during this time

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Thu Thảo 4 years 2021-08-02T19:59:12+00:00 1 Answers 11 views 0

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  1. thuthuy
    0
    2021-08-02T20:00:22+00:00
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    Answer:

    4 km/min

    Explanation:

    Applying

    S = (d₂-d₁)/(t₂-t₁)………….. Equation 1

    Where S = speed of the car, d₁ = Intial reading of the odometer, d₂ = Final reading of the odometer, t₁ = initial time, t₂ = final time.

    From the question,

    Given: d₁ = 68420 km, d₂ = 68540 km, t₁ = 9:00 am, t₂ = 9:30 am

    Substitute these values into equation 1

    S = (68540-68420)/(9:30-9:00)

    S = 120/30

    S = 4 km/min.

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