A 240-m long train crosses a 360-m long tunnel in 30 seconds. What is the speed of the train (in km/h) ?
Answer & explanation
Correct answer: option 1
Total Distance = 240 + 360 = 500m
Time takenn = 30 sec
Speed = \(\frac{Distance }{Time}\)
= \(\frac{500 }{30}\)
= \(\frac{50 }{3}\) m/sec
X m/sec = X × \(\frac{18 }{5}\) km/h = Y km/h
\(\frac{50 }{3}\) × \(\frac{18 }{5}\) = 72 km/h