Aptitude - Problems on Trains - Discussion

Thanks for the explanations.

Speed = distance/time taken.
60 *1000 = length/ 9/3600.

1 hr = 3600 seconds.
9/3600*60*1000 = 150 m.

According to antenna, which we design we say that frequency is between 1 to 5 Mhz or other think we can define values between 1 to 2 Mhz and can use them for infinite frequencies because if we consider frequency between 1 to 2 MHz then if we see then the output can be
1.1,1.111,1.115677,1.9876,1.11153565.....infinity now. Then why we are using this is because if you increase the value before a point it will have a large change as compared to adding values after the point.

And this is because even if there is a small change in frequency then both signals are uncorrelated to large extent.

There for 9seconds convert into hours.
60km convert into meters.
9/3600 * 60000 = 150.

Thank you all for explaining very well.

60km is converted to 60000m and 1 hour to 3600sec, there for 60000/3600 answer to 16.66 and multiple to 9sec and answer is 149.999.

So, here, the full value as 150 metres.

Thanks.

Thank you everyone for explaining the answer.

Thank you so much for all your explanation.

Super, thank you for your detailed explanation.