Problem on Train

1. A 500m long train is running at 90 Kmph. how much time it will take to cross an electric pole? A)30 sec B)25 sec C)20 sec D)15 sec Answer : Option C Explanation: Formula: Distance = Speed × Time If we convert Kmph in to Mpsec multiply by 5/18, 500 = 90 KmpH × time 500 = 90×5/18 × time Time = 20Sec 2. A 180m long train is running at 72 Kmph. how much time it will take to cross a platform of 120m long? A)15 sec B)18 sec C)20 sec D)22 sec Answer : Option A Explanation: Formula: D = S × T 180 = 72 Kmph × Time 180= 72×5/18 × Time Time = 15 Sec 3.A 600m long train is running at 108 Kmph. how much time it will take to cross an electric pole? A)18 sec B)20 sce C)25 sec D)24 sec Answer : Option B Explanation: Formula: D = S × T 600 = 108 Kmph × T 600 = 108 × 5/18 × T Time = 20Sec 4. Two trains 600m and 400m long run at the speeds of 50 kmph and 40kmph respectively in opposite Directions on parallel tracks. The time taken to cross each other? A)50 sec B)30 sec C)40 sec D)45 sec Answer : Option C Explanation: Length of two Trains = 600m + 400m = 1000m Total Speed= 50 Kmph + 40 Kmph (Opposite Direction) = 100 Kmph Time = Distance/Speed Time = 1000/ 90 Time = 40Sec

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