A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr ?
Choose the correct choice from the following choices.
A) 13.33
B) 26.67
C) 40
D) 66.67
E) 50
Explanation:   Speed = 150+300/40.5m/sec   =450/40.5=18/5km/hr = 40 km/hr.   ANSWER IS 40
<result>C</result>
A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr ?