Question

Gabbar kidnapped Basanti and placed him a tunnel which has a length of 500 m. He tied her from 200 m distance from one side. Veeru heroically saved Basanti and at the same time a train was approaching the tunnel. They ran at a speed of 10m/s to the nearer end and missed the collision very closely. Find the speed of the train.

Answer 1

Step-by-step explanation:

The answer is 25 m/s

as it is given in the question that tunnel is of = 500 m

and basanti was kept 200 m away from a side

veeru ran with her at 10 m/s speed to cover 200 m

time taken by both of them

200/10 = 20 sec

that means train covers 500 m in 20 sec

now the speed of train will be

500/20 = 25 m/s

Answer 2

Answer:

25 m/s

Step-by-step explanation:

Given,

total length of tunnel=500m

Distance of basanti from nearer end of tunnel= 200 m

speed of basanti and veeru = 10 m/sec

since, speed=$\frac{distance}{tme}$

time taken by them to reach nearer end of tunnel=$\frac{200}{10}$ sec

                                                                                  =20 sec

since they missed the collision very closely ,so the train has to travelled whole tunnel of 500 m in 20 sec.

hence the speed of the train=$\frac{500}{20}$ m/sec

                                              =25 m/sec