# What will be the speed of the train in Kmph? If

A 150 mt. long train crosses a signal post in 7 sec. What is the speed of the train in kmph?

- 77 km/hr.
- 77 ⅓ km/hr
- 77 ⅕ km/hr
- 77 ⅟7 km/hr

**Answer: (d) 540/7 km/hr.
Explanation:**

Length of the train = 150 mt.

Train covered distance in 7 sec = 150 m

Therefore speed of train = 150/7 m/sec.

Speed in Km/hr = 150 x 18/7 x 5 = 540/7 km/hr.

Hence, the speed of the train = 540/7 km/hr.