Question

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3. A train 250 m long takes 40 seconds to cross a tunnel. If the speed of the train is
60 km/hr, find the length of the tunnel.​

Answer 1

Step-by-step explanation:

t=40 seconds

s=60km/h

d=s/t

d=60/40

Answer 2

Answer:

ANSWER IS 416.66 METRE LONG

Step-by-step explanation:

SINCE WE KNOW DISTANCE = LENGTH OF TRAIN + LENGTH OF TUNNEL

LENGTH OF TRAIN = 250 METRE ( GIVEN )

LET THE LENGTH OF TUNNEL BE X

SO, DISTANCE = 250 + "X "METRE

TIME = 40 SECONDS ( GIVEN )

SINCE SPEED IS GIVEN IS KMPH , TO COVERT IT IN MPH,

= 60 * 5/18

SO IT WILL COME AS 50/3 ( AS SIMPLIFIED FORM )

ACCORDING TO THE QUESTION , 250 + X /40 = 50 /3

3( 250 + X ) = 50 * 40

750 + 3X = 2000

3X = 2000 - 750

X = 1250 /3

= 416 .6 METRES

LENGTH OF TUNNEL = 416 METRE AND 66 CM

THANK YOU .