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A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?
A. 13.33
B. 26.67
C. 39.16
D. 40

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A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?
A. 13.33
B. 26.67
C. 39.16
D. 40
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28 Answers

  1. ANSWER WILL BE (B) THAT IS 26.67.
    SOLUTION :-
    300/40.50=7.407 per second metres
    for 60 second 7.407*60=444.444 metres
    for 60 minutes i.e. 1 hours = 444.444*60=26666.666 metres
    now metres will be converted into km than 26666.66/1000=26.67

    • 0
  2. 300m= 0.3km
    150 m = 0.15km
    Total distance = (0.3+ 0.15) = 0.45
    In 40.5s the train crosses 0.45km
    In 1s the train crosses (0.45/40.5)km
    In 3600s the train crosses (0.45*3600)/40.5 km
    = 40 km
    Therefore, 40km/hr

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  3. 300m= 0.3km
    150 m = 0.15km
    Total distance = (0.3+ 0.15) = 0.45
    In 40.5s the train crosses 0.45km
    In 1s the train crosses (0.45/40.5)km
    In 3600s the train crosses (0.45*3600)/40.5 km
    = 40 km
    Therefore, 40km/hr

    • 1
  4. 13.33
    cos 3600/40.5=88.88888889
    so 800/9 its
    150*800/9 m/hr
    its 13333.33333 m/hr
    so 13.33 km/hr

    • -18
  5. Speed =d/t.
    =300/40.5=7.40 m/s.
    The speed of the train =7.40X(3600/1000)=26.6 km/hr.
    Ans is B.

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  6. Distance = 150 + 300 = 450
    Time = 40.5 SEC
    Speed = (450/40.5) x (18/5) = 40 K/hr

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  7. Total Distance = 150 + 300 => 450

    Time = 40.5

    Speed of Train = (450/40.5) x (18/5) => 40 K/hr

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