Two trains, 297 m and 243 m, in length are running in opposite directions. The first runs at the rate of 42 km/hr and the second at the rate of 66 km/hr. How long will they take to cross each other?
Given:
Length of first train = 297 m
Length of second train = 243 m
Speed of first train = 42 km/hr
Speed of second train = 66 km/hr
Formula Used:
Relative speed = S1 + S2
T =
Solution:
Calculate the total distance:
297 + 243 = 540
Calculate the relative speed:
42 + 66 = 108
Convert the relative speed from km/hr to m/s:
108 × = 30
Calculate the time taken:
Time = = 18
Final Answer
So the correct answer is (d)
English
100 Questions
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90 Mins English English100 Questions100 Marks90 Mins English English100 Questions100 Marks90 Mins EnglishTwo trains, 297 m and 243 m, in length are running in opposite directions. The first runs at the rate of 42 km/hr and the second at the rate of 66 km/hr. How long will they take to cross each other?
Train P going at a speed of 72 km/hr completely passes train Q of length 393 m, going in the same direction on parallel tracks at 42 km/hr, in 1.5 minutes. How much time (in seconds) will train P take to completely cross train R of length 468 m, going at 63 km/hr in the opposite direction?
Two trains start from stations A and B towards each other at speeds of 100 km/hour and 120 km/hour, respectively. At the time of their meeting, the second train has covered a distance of 280 km more than that covered by the first train. The distance between the stations A and B is
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Two trains having lengths of 110 m and 390 m are running at speeds of 120 km/h and 130 km/h in the same direction. The faster train, coming from behind, completely crosses the other in how many minutes?
Train A leaves station M at 8:25 AM and reaches station N at 3:25 PM on the same day. Train B leaves station N at 10:25 AM and reaches station M at 3:25 PM on the same day. Find the time when trains A and B meet.
Two trains, 200 m and 250 m long, are moving in the same direction at speeds of 80 km/hr and 60 km/hr, respectively. How long (in seconds) will it take for the faster train to completely pass the slower one?
Two trains having lengths of 450 m and 350 m are running at speeds of 80 km/h and 110 km/h, respectively, in the same direction. The time taken (in minutes) by the faster train, coming from behind, to completely cross the other train is:
Suggested Test Series
Suggested Test Series
Two trains, 297 m and 243 m, in length are running in opposite directions. The first runs at the rate of 42 km/hr and the second at the rate of 66 km/hr. How long will they take to cross each other?
Train P going at a speed of 72 km/hr completely passes train Q of length 393 m, going in the same direction on parallel tracks at 42 km/hr, in 1.5 minutes. How much time (in seconds) will train P take to completely cross train R of length 468 m, going at 63 km/hr in the opposite direction?
Two trains start from stations A and B towards each other at speeds of 100 km/hour and 120 km/hour, respectively. At the time of their meeting, the second train has covered a distance of 280 km more than that covered by the first train. The distance between the stations A and B is
Two trains are moving in opposite directions at speeds of 140 km/h and 80 km/h. The length of one train is 340 m. The time taken by them to cross each other is 11 seconds. The length (in m) of the other train, correct to 2 decimal places, is:
Two trains having lengths of 110 m and 390 m are running at speeds of 120 km/h and 130 km/h in the same direction. The faster train, coming from behind, completely crosses the other in how many minutes?
Train A leaves station M at 8:25 AM and reaches station N at 3:25 PM on the same day. Train B leaves station N at 10:25 AM and reaches station M at 3:25 PM on the same day. Find the time when trains A and B meet.
Two trains, 200 m and 250 m long, are moving in the same direction at speeds of 80 km/hr and 60 km/hr, respectively. How long (in seconds) will it take for the faster train to completely pass the slower one?
Two trains having lengths of 450 m and 350 m are running at speeds of 80 km/h and 110 km/h, respectively, in the same direction. The time taken (in minutes) by the faster train, coming from behind, to completely cross the other train is:
