Question
A freight train requires 17.6 seconds to pass a
stationary person and 28 seconds to traverse a 260-meter-long tunnel. Simultaneously, a motorcycle can cross a 315-meter-long bridge in 15 seconds. Determine the time needed for the train to entirely overtake the bike.Solution
ATQ, Let the length of the freight trains = 'l' meters Then, distance travelled by the freight  trains in 17.6 seconds = 'l' meters Distance travelled by the Freight  train in 28 seconds = (l + 260) meters So, distance travelled by the freight train in (28 - 17.6) seconds = l + 260 - l = 260 meters So, speed of the Freight train = 260 ÷ 10.4 = 25 m/s And so, length of the freight train = 25 × 17.6 = 440 meters Speed of the bike = 315 ÷ 15 = 21 m/s So, relative speed of the freight train w.r.t to the bike = 25 - 21 = 4 m/s And so, time taken by the freight train to completely overtake the bike = 440 ÷ 4 = 110 seconds
In a certain language ‘visible from space’, is written as ‘w@i21 g$i12 t#a15 ’, then what does ‘Solar eclipse’ stand...
What is the ode for “nation” in the given code language?
In a certain code language, 'MAGIC' is coded as 'PZJHF' and 'TOPPER' is coded as 'WNSOHQ'. How will ‘HANGER’ be coded in that language?
Which of the following denotes ’12 $V 17@K’ code?
In a certain code language ‘LAPTOPS’ is written as ‘QBMTTQP’ and ‘STARE’ is written as ‘UTAFS’. How is &...
If ‘DOG’ = 78, then ‘BARK’ = (?)
If ‘Hospital’ is called as ‘School’, ‘School’ is called as ‘Temple’, ‘Temple’ is called as ‘Market’, and ‘Market’ is called...
If ‘SUMMARY’ is coded as ‘18’, ‘TIGER’ is coded as ‘2’, then what is the code for ‘PYTHON’ in the same code language?
...In certain code language, 'MANNERS' is coded as 'OZPMGIU'. How will 'LEOPARD' be coded in that language?
In a certain code language, ‘STEM’ is written as ‘56’, and ‘BRAG’ is written as ‘27’. How will ‘GRIM’ be written in that language?
Relevant for Exams:
