A train passes two bridges of lengths 500 mtrs and 250 mtrs in 100 sec and 60 sec. The length of the train is.
A. 125 mtr
B. 250 mtr
C. 120 mtr
D. 152 mtr
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Let the length of the train be 'I' mtrs.
Then, Speed of the train in case 1 = (500+l)/100 m/s
And Speed of the train in case 2 = (250+l)/60 m/s
Hence. (500+l)/100 = (250+l)/60
Solving we get, l = 125 mtrs.
125 mtr is the answer