A 130 m long train crosses a 290 m long bridge in 54 seconds. What time will it take to cross a platform 220 m long?
Answer & explanation
Correct answer: option 3
Total Distance (d1 : d2) = (130 + 290) : (130 + 220) = 420 : 350 = 6 : 5
As speed is same, then ratio of time & distance will be directly proportional.
Therefore,
d1 : d2 = t1 : t2 = 6 : 5
6R = 54 sec.
1R = 9 sec
5R = 5 × 9 = 45 sec.