A goods train runs at the speed of 72 km/hr and crosses a 250 m long platform in 22 sec.

A goods train runs at the speed of 72 km/hr and crosses a 250 m long platform in 22 sec. What is the length of the goods train?

Answer/Solution

190

Steps/Work

Speed = 72 * 5/18 = 20 m/sec.
Time = 22 sec.
Let the length of the train be x meters.
Then, (x + 250)/22 = 20
x = 190 m.
Answer: B

Physics Calculator / Auto Solver

A goods train runs at the speed of km / hr and crosses a m long platform in sec. What is the length of the goods train?

Calculated Answer

190

Step by Step Solution

In order to solve problem, you must evaluate n₂ * n₀ / 3600 * 1000 - n₁.

n₀ =	72
n₁ =	250
n₂ =	22

n₂ * n₀ / 3600 * 1000 - n₁
Evaluate n₀ / 3600 = 0.02
n₂ * 0.02 * 1000 - n₁
Evaluate 0.02 * 1000 = 20
n₂ * 20 - n₁
Evaluate n₂ * 20 = 440
440 - n₁
Evaluate 440 - n₁ = 190
190
The answer to the problem and the result of n₂ * n₀ / 3600 * 1000 - n₁ is 190