Question

Two trains separated by a distance of 45 km on the same track approach each other with a constant speed of 15 km/h each. A bird starts flying with a constant speed of 22 km/h from the engine of one of the trains to the engine of the other train, touches it and flies back towards the first engine, going back and forth till the two trains crash. How much distance does the bird totally fly?

Answer 1

Answer:

Correct option is

B

40km

The Time taken till crash =  

speed

distance

​

=  

40km/h

40km

​

=1hr

Speed of Bird = 45 km/hr

Hence distance travelled =Speed×time=40km

Explanation:

Answer 2

Answer:

b

Explanation:

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