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'.

[Q]: Problem: a garrison of 2000 men has provisions for 54 days . at the end of 15 days , a reinforcement arrives , and it is now found that the provisions will last only for 30 days more . what is the reinforcement ? 
Options: a ) 1800 men , b ) 3900 men , c ) 600 men , d ) 3800 men , e ) 900 men
[A]: c


[Q]: Problem: a train is 360 meter long is running at a speed of 90 km / hour . in what time will it pass a bridge of 140 meter length ? 
Options: a ) 27 seconds , b ) 29 seconds , c ) 40 seconds , d ) 11 seconds , e ) 20 seconds
[A]: e


[Q]: Problem: a is twice as good a work man as b and together they finish a piece of work in 24 days . the number of days taken by a alone to finish the work is : 
Options: a ) 28 days . , b ) 16 days . , c ) 12 days . , d ) 24 days . , e ) 36 days .
[A]:
e