Math, asked by sodanikamya, 8 months ago

a train, 100 m long is running at a speed of 54km/ hr. if it crosses a bridge in 12 sec, find the length of the bridge. ​

Answers

Answered by DhanurRelhan
32

Answer:

54*5/18 = 15 m/s

15=100/12+x/12

180-100=x

Bridge = 80m long

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Answered by Nav4321
3

Step-by-step explanation:

sum of length of bridge and train

__________________________= time taken by

speed of train. train to pass

the bridge

length of train= 100m

length of bridge= X

time taken to cross the bridge= 12 sec

speed of train= 54 km/hr= 15 m/ sec

Therefore,

100+X/15=12

100+X= 12*15

100 + X = 180

X= 180-100

X= 80

ANSWER= length of bridge is 80 m

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