maths

posted by usha

a man travelled a distance of 22km in one hour partly in a car at a speed of 30 km/hour and partly on a motorcycle at 18km/hour. find the distance travelled by him in the car

  1. Reiny

    time in car ---- t hrs
    time on motorcycle --- 1 - t hrs

    30t + 18(1 - t) = 22

    solve for t, sub into 30t to get the distance in km

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