Question

A train 150 m long passes a tree in 12 seconds. How long will it take to pass a tunnel 250 m long? ​

Answer 1

Answer:

The train will pass a tunnel 250 m long in 32 seconds.

Step-by-step explanation:

It is given that a train 150 m long passes a tree in 12 seconds.

Speed of train is

Speed=Speed=

Time

Distance

Speed= 12/150

Speed=12.5m/s

Total distance covered by train is

Total distance= 150+250=400mTotal distance=150+250=400m

Time= Speed/Distance

Time= 12.5/400

Time=32Time=32

Therefore, the train will pass a tunnel 250 m long in 32 seconds.

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Answer 2

Step-by-step explanation:

Speed =150/12

Time Taken to pass a tunnel = 250 +150/150 /12

= 400 *12/150

=32 seconds