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'.

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 22 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 ) 288 , b ) 516 , c ) 877 , d ) 278 , e ) 178
b

Problem: a train is 485 meter long is running at a speed of 45 km / hour . in what time will it pass a bridge of 140 meter length 
Options: a ) 20 seconds , b ) 30 seconds , c ) 40 seconds , d ) 50 seconds , e ) none of these
d

Problem: find the cost of fencing around a circular field of diameter 40 m at the rate of rs . 3 a meter ? 
Options: a ) 400 , b ) 370.4 , c ) 376.98 , d ) 340.9 , e ) 350.03

c