Question

a train 110 M long is running at 108 km per hour it crosses a bridge in 13 seconds find the length of the bridge​

Answer 1

Step-by-step explanation:

it speed in m/s

is 108 ×5/18=30

then take 13 a to fully cross means it travel distance = bridge length + 110 m ( length of train)

total distance in 13 second = 13 ×30 =390 m

thus length of bridge = 390-110=280m

hope it helps

plz mark it brainliest

plz follow me

Answer 2

GIVEN:

• Length of Train is 110 m
• speed of train = 108 km/hr
• Time taken by train to cross a bridge is 13s

TO FIND:

• Length of the bridge.

SOLUTION:

Let the length of bridge be x metres.

Therefore Distance covered by train to cross the bridge = (110 + x) m

$\tt \: \: \begin{tabular}{| l | c | c |} \cline{1-3} Distance travelled (m) & 10800 & 110+x \\ \cline{1 - 3} Time taken (s) & 3600 & 13 \\ \cline{1 - 3}\end{tabular}$

This is case of direct variation.

$\therefore \bf\: \frac{x1}{y1} = \frac{x2}{y2} \\ \\ \implies \tt \: \frac{10800}{3600} = \frac{110 + x}{13} \\ \\ \implies \tt \: 30 \times 13 = 110 + x \\ \\ \implies \tt \: \: 390 = 110 + x \\ \\ \implies \tt \: x = 390 - 110 \\ \\ \implies \tt \: x = 280$

Hence Length of bridge is 280 m.