A train is 400 meter long is running at a speed of 60 km/hour.

A train is 400 meter long is running at a speed of 60 km/hour. In what time will it pass a bridge of 800 meter length?

Answer/Solution

72 seconds

Steps/Work

Speed = 60 Km/hr = 60*(5/18) m/sec = 150/9 m/sec
Total distance = 400+ 800 = 1200 meter
Time = Distance/speed
= 1200 * (9/150) = 72 seconds
Answer: A

Physics Calculator / Auto Solver

A train is meter long is running at a speed of km / hour. In what time will it pass a bridge of meter length?

Calculated Answer

72

Step by Step Solution

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

n₀ =	400
n₁ =	60
n₂ =	800

(n₀ + n₂) / ((n₁ * 1000) / 3600)
Evaluate n₀ + n₂ = 1200
1200 / ((n₁ * 1000) / 3600)
Evaluate n₁ * 1000 = 60000
1200 / (60000 / 3600)
Evaluate 60000 / 3600 = 16.666666666667
1200 / 16.666666666667
Evaluate 1200 / 16.666666666667 = 72
72
The answer to the problem and the result of (n₀ + n₂) / ((n₁ * 1000) / 3600) is 72