Sign in
Please select an account to continue using cracku.in
↓ →
Two trains, one 150 m long and the other 130 m long, coming from opposite directions
crossed each other in 7.2 seconds. The sum of speed of the two trains every hour would then be:
The correct option is D.
Since two trains are coming from opposite direction so relative speed is sum of the speed of trains.
So time taken to cross each other = $$\frac{sum of length of trains }{sum of speed of trains}$$
$$\Rightarrow$$ 7.2sec =$$\frac{130+150}{sum of speed}$$
$$\Rightarrow$$ $$sum of speed$$ = $$280\times7.5 m/s$$ = 140km/h
Create a FREE account and get: