QA – Placement Quizzes | Trains, Boats and Streams | Question 12
In what time will a train running at a speed of 90 m/sec, of length 80 meters crosses a platform of length 100 meters?
(A) 4 sec
(B) 5 sec
(C) 2.5 sec
(D) 2 sec
Explanation: relative distance = 80+100
V = D/T
90 =( 180)/t = 180/90 = 2sec
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