Question

A 100 m long train crosses 350 m
long bridge in 54 seconds. How
much time is taken by another
train to cross the bridge whose
length is 20% more and speed is
20% more.
(HAZ., 1996)
in
he
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Answer 1

Answer:

52 second

Step-by-step explanation:

see the solution above

Answer 2

Time  taken by another  train to cross the bridge is 47 seconds .

Step-by-step explanation:

A 100 m long train crosses 350 m  long bridge in 54 seconds.

total length = 100 m + 350 m = 450 m

speed = $\frac{distance}{time}$

speed of train  = $\frac{450}{54} = \frac{25}{3} m/sec$

if length is 20% more

new distance = $350 + \frac{120}{100} \times 100$

= 350 +120

= 470 m

if speed is 20% more

new speed = $\frac{120}{100}\times \frac{25}{3}$

= 10 m/sec

required time to cross the bridge = $\frac{470}{10}$

= 47 seconds

hence ,

Time  taken by another  train to cross the bridge is 47 seconds .

#Learn more:

A train crosses a 220 m long bridge in 20 seconds. if the length of the train is 100 m, what is the speed of the train

https://brainly.in/question/4362236