Question

A train 210 m long took 12 seconds to pass a 90 m long tunnel. Find the speed of
the train,​

Answer 1

Answer:

25m/sec...

Step-by-step explanation:

to pass the tunnel completely the train has to travel a distance of 300m....

So,

D=300m

T=12sec

S=D/T

=300m/12 sec

=25m/sec

HOPE THIS HELPS YOU

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Answer 2

Answer:

25m/s or 90km/hr

Step-by-step explanation:

To find = Speed of train

Distance = 210 + 90 = 300m

Time = 12 seconds

Speed = Distance / Time

= 300/12 = 150/6 = 50/2 = 25m/s

If you want speed in km/hr,

25 * 3600/1000 = 25 * 18/5 = 5 * 18 = 90 km/hr

Hope it helped!