Question 70

A 450 meter long train crosses a bridge 650 meters long in 36 seconds. What is speed (in km/hr) of the train?

Solution

Length of train = 450 m and length of bridge = 650 m

Time taken = 36 seconds

=> Speed = distance/time

= $$\frac{(450+650)}{36}$$

= $$\frac{1100}{36}=\frac{275}{9}$$ m/s

= $$\frac{275}{9}\times(\frac{18}{5})$$ km/hr

= $$55\times2=110$$ km/hr

=> Ans - (A)

Share on Whatsapp Share on Whatsapp

Create a FREE account and get: