Question

A train 210 meter long train took 12 sec to pass a 90 meter long tunnel find the speed of train

Answer 1

total distance that train has to travel
= length of tunnel + length of train
= 90 + 210
= 300 m.

Time taken by train to travel 300m = 12 secs.

Speed = (Distance travelled)/(time taken)
= 300/12
= 25 m/s.

Answer 2

$<b><i><u>HERE IS YOUR ANSWER..$⬇⬇

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$\underline{SOLUTION}$ ➡

GIVEN,

LENGTH OF THE TRIAN = 210 METRES

LENGTH OF THE TUNNEL = 90 METRES

•°• DISTANCE PASSED BY THE TRAIN

= ( 210 + 90 ) METRES

= 300 METRES

AGAIN,

TIME TAKEN BY THE TRIAN TO PASSED BY THE TRIAN = 12 SEC.

•°• SPEED OF THE TRIAN = ( DISTANCE PASSED BY THE TRIAN ) / ( TIME TAKEN TO PASS THE DISTANCE )

= 300 METRES / 12 SEC.

= 25 METRES / SEC.

$\underline {ANSWER}$ ➡

25 METRES PER SECOND.

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✝✝..HOPE IT HELPS YOU..✝✝