Math

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A man traveled a distance of 22km in one hour,partly in a car at a speed of 30km/hr and partly on a motorcycle at 18km/hr.find the distance travelled by him in the car.
Ans is 10km plz gve me fst sltn

  • Math -

    if the distance traveled by car is c, the 22-c is on bike.

    add up the times, knowing that time = distance/speed:

    c/30 + (22-c)/18 = 1
    clear fractions to get

    3c + 5(22-c) = 90
    3c + 110 - 5c = 90
    2c = 20
    c = 10

  • Math -

    Thanx dear

  • Math -

    This is right answer but this step is wrong .

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