Find The Distance of His Office from His House.

If sohail walks from his home to office at 16 km/h. he is late be 5 min. If he walks at 20 km/h, he reach 10 min before the office time. find the distance of his office from his house.

  1. 22 km
  2.  20 km
  3.  18 km
  4.  16 km
Tahir Lecturer Asked on 29th July 2015 in Maths.
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  • 1 Answer(s)

    Answer: (2) 20 km
    Explanation:-
    Let the distance of office from his house = X  km
    According to the question,
    X/16 + 5/60 = X/20 – 10/60
    X/16 – X/20  = – (1/6 + 1/12)
    (5 X – 4 X)/80 = – (2 + 1)/12
    X/80 = – 3/12
    X/80 = – 1/4
    4 X = – 80
    X = – 80/4
    X = – 20                (Distance is always)
    Then, X = 20 km
    Hence, 20 km distance of his house from his office.

    Anurag Mishra Professor Answered on 30th July 2015.
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