A train crosses a signpost in 6 seconds and a car traveling in the same direction at 50 kmph in 72 seconds. What is the length of train and the speed at which it is traveling?
Answers
Answer:
hiiii
your answer is here !
Step-by-step explanation:
=> Case I =>
=> Let X km/hr be the speed of the train. = X x 5/18 m/sec
=> Time taken to cross a signpost = 6 seconds.
=> Therefore distance traveled = X x 5/18 x 6 = 5X/3 meter = length of the train
=> Case II =>
=> The speed of the car = 50 km/hr.
=> Relative speed of the train w.r.t car = (X – 50) km/hr = (X – 50) x 5/18 m/sec.
=> Time taken to cross the car = 72 seconds.
=> Therefore,
=> distance traveled = (X – 50) x 5/18 x 72 = 20 (X-50) m = length of train
=> Equating length of the train in
=> Case I and Case II,
=> we get 5X/3 = 20 (X – 50).
=> Solving for X, we get X = 600/11 km/hr and the length = 5/3 x 600/11 = 1000/11m
=> follow me !
Answer:
yes
Step-by-step explanation:
Refer the attachment.
