Question

A train crosses a pole in 12 seconds when it is travelling at a speed of 54 km per hour find the length of the train

Answer 1

$\textbf {Hey there, here is the solution.}$

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Given that the speed is 54 km/h

⇒ 1 hour = 54 km

.

Rewrite 1 hour as 60 mins:

⇒ 60 mins = 54 km

.

Find 1 min:

⇒ 1 min = 54 ÷ 60 = 0.9 km

.

Rewrite 1 min as 60 seconds:

⇒ 60 seconds - 0.9 km.

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Rewrite 0.9km as metres

⇒ 60 seconds = 900m

.

Find 1 second:

⇒ 1 second = 900 ÷ 6 = 15 m

.

Find 12 seconds:

⇒ 12 seconds = 15 x 12 = 180 m

.

Answer: The pole is 180 m

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⭐$\textbf {Cheers}$⭐