In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
--------
Question: Problem: a train running at the speed of 120 km / hr crosses a pole in 18 seconds . what is the length of the train ?
Options: a ) 560 , b ) 570 , c ) 580 , d ) 590 , e ) 600

Answer: e

Question: Problem: a is twice as good a workman as b and together they complete a work in 12 days . in how many days a alone can do the work ?
Options: a ) 32 , b ) 33 , c ) 34 , d ) 35 , e ) 36

Answer: e

Question: Problem: two tains of equal lengths take 10 seconds and 16 seconds respectively to cross a telegraph post . if the length of each train be 120 metres , in what time ( in seconds ) will they cross each other travelling in opposite direction ?
Options: a ) 12 , b ) 14 , c ) 16 , d ) 12.3 , e ) 18

Answer:
d