A 250 meter long train crosses a platform in 40 seconds while it crosses a signal pole in 20 seconds...

A 250 meter long train crosses a platform in 40 seconds while it crosses a signal pole in 20 seconds. What is the length of the platform?

Answer/Solution

250

Steps/Work

Speed = [250 / 20] m/sec =25/2 m/sec.
Let the length of the platform be x meters.
Then, x + 250 /40 = 25/2
2(x + 250) = 1000 è x = 250m. Answer: D

Physics Calculator / Auto Solver

A meter long train crosses a platform in seconds while it crosses a signal pole in seconds. What is the length of the platform?

Calculated Answer

250

Step by Step Solution

In order to solve problem, you must evaluate n₁ * n₀ / n₂ - n₀.

n₀ =	250
n₁ =	40
n₂ =	20

n₁ * n₀ / n₂ - n₀
Evaluate n₀ / n₂ = 12.5
n₁ * 12.5 - n₀
Evaluate n₁ * 12.5 = 500
500 - n₀
Evaluate 500 - n₀ = 250
250
The answer to the problem and the result of n₁ * n₀ / n₂ - n₀ is 250