A Man Is Standing On A Railway Bridge Which Is 180m Long. He Finds Th

1.	A Man Is Standing On A Railway Bridge Which Is 180m Long. He Finds That A Train Crosses The Bridge In 20seconds And Him In 8 Seconds. Find The Length Of The Train And Its Speed?
Answer» LET the length of the train be X meters Then, the train COVERS x meters in 8 seconds and (x + 180) meters in 20 seconds. Therefore x/8 = (x+180)/20 <=> 20x = 8(x+180) <=> x = 120 Therefore Length of the train = 120m Speed of the train = 120/8 m/sec = 15 m/sec =15 * 18/5 kmph = 54KMPH. Let the length of the train be x meters Then, the train covers x meters in 8 seconds and (x + 180) meters in 20 seconds. Therefore x/8 = (x+180)/20 <=> 20x = 8(x+180) <=> x = 120 Therefore Length of the train = 120m Speed of the train = 120/8 m/sec = 15 m/sec =15 * 18/5 kmph = 54kmph.

A Man Is Standing On A Railway Bridge Which Is 180m Long. He Finds That A Train Crosses The Bridge In 20seconds And Him In 8 Seconds. Find The Length Of The Train And Its Speed?

Answer»

LET the length of the train be X meters Then,

the train COVERS x meters in 8 seconds and (x + 180) meters in 20 seconds.

Therefore x/8 = (x+180)/20

<=> 20x = 8(x+180)

<=> x = 120

Therefore Length of the train = 120m

Speed of the train = 120/8 m/sec = 15 m/sec =15 * 18/5 kmph = 54KMPH.

Let the length of the train be x meters Then,

the train covers x meters in 8 seconds and (x + 180) meters in 20 seconds.

Therefore x/8 = (x+180)/20

<=> 20x = 8(x+180)

<=> x = 120

Therefore Length of the train = 120m

Speed of the train = 120/8 m/sec = 15 m/sec =15 * 18/5 kmph = 54kmph.