maths --plse help me..

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A man drives fom the origin to his destination in his car at the speed of 24km/hr and reaches 5 minutes late.Next day he drives from the same origin to the same destination with a speed of 30km/hr and reaches 4 minutes early.Find at what distance is the origin from the destination.Write a linear equation using the given information.

  • maths --plse help me.. -

    time difference is 9 minutes = 9/60 hr
    the distances are the same
    time = distance/speed

    d/24 = d/30 + 9/60
    d = 18

    check:
    18/24 = 3/4 = 45 min
    18/30 = 3/5 = 36 min

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