# A Train of Length of 150 Meter Takes 40.5 Seconds to Cross a Tunnel of Length 300 Meters. What is the Speed of the Train in km/h?

### Computer MCQs Series for PPSC, FPSC – Most Repeated MCQs | Set 6

What are you looking for? Let’s dig in quickly

Recommended

## Explanation

A train of length of 150 meter takes 40.5 seconds to cross a tunnel of length 300 meters; this statement shows, there are two lengths

• Length of the train = 150 meter
• Length of tunnel = 300 meter

Total length = 150 + 300 = 450 meter

As, time is also given so

speed = length/time ______ (i)

After placing the given values in equation (i) speed equals 40 km/h.

## To Find

Length of the train = ?

## Solution

Total length = 150 + 300 = 450 meter

Given time = 40.5 sec

Speed in m/sec = 450/40.5

Speed in m/sec = 11.11 m/sec answer

Speed in km/h = (11.11 x 3600)/1000

Speed in km/h = 40 km/h answer

### Conclusion

If a train of length of 150 meter take 40.5 seconds to cross a tunnel of length 300 meters. The speed of the train in km/h will be 40 km/h.