Question

In what time will a train 100 metres long cross an electric pole, if its speed is 144 kmph?

• A. 2.5 seconds
• B. 4.25 seconds
• C. 5 seconds
• D. 12.5 seconds
• E. 13 seconds

Answer 1

The correct option is A

2.5 seconds

Speed= $(144\times \frac{5}{18})$ = 40 m/sec

Time taken = $(\frac{100}{40})sec$ = 2.5 sec