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: two passenger trains start at the same hour in the day from two different stations and move towards each other at the rate of 16 kmph and 21 kmph respectively . when they meet , it is found that one train has traveled 60 km more than the other one . the distance between the two stations is ? 
Options: a ) 2887 , b ) 444 , c ) 877 , d ) 278 , e ) 178

A: b
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Q: Problem: what percent of a day is 7 hours ? 
Options: a ) 29.2 % , b ) 12.5 % , c ) 13 % , d ) 11.3 % , e ) none of these

A: a
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Q: Problem: 1200 men have provisions for 18 days . if 450 more men join them , for how many days will the provisions last now ? 
Options: a ) 12.9 , b ) 12.0 , c ) 12.5 , d ) 12.2 , e ) 13.1

A:
e
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