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25 March, 20:42

A car traveling 95km/h is 110m behind a truck traveling 75km/h. How long will it take the car to reach the truck?

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Answers (2)
  1. 25 March, 23:00
    0
    The car is 'gaining' on the truck at (95-75) = 20 km/hr.

    (110 m) / (20,000 m/hr) =

    (110/20,000) hour =

    0.0055 hour.

    To get a better feel for that amount of time, convert units:

    (0.0055 hour) x (60 min/hr) x (60 sec/min) =

    (0.0055 x 3,600) sec = 19.8 seconds
  2. 25 March, 23:48
    0
    since the car is 110 m behind or. 11 km behind.

    let t = time

    the trucks distance traveled is 75t +.11 km (since it has a. 11 km lead).

    the car's distance traveled is 95t.

    the car catches up to the train when their distance are equal so:

    75t +.11 = 95t

    .11 = 95t - 75t

    20t =.11

    t =.0055 h

    to convert to seconds: 60 sec = 1 min, 60 min = 1 hr or 3600 sec/hr.

    so. 0055 * 3600 = 19.8 seconds.
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