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'.

[EX Q]: Problem: if 4 spiders make 3 webs in 9 days , then how many days are needed for 1 spider to make 1 web ? 
Options: a ) 9 , b ) 12 , c ) 27 , d ) 24 , e ) 16
[EX A]: b

[EX Q]: Problem: a train passes a station platform in 35 sec and a man standing on the platform in 20 sec . if the speed of the train is 54 km / hr . what is the length of the platform ? 
Options: a ) 228 , b ) 240 , c ) 225 , d ) 166 , e ) 1811
[EX A]: c

[EX Q]: Problem: the length of the bridge , which a train 180 meters long and travelling at 48 km / hr can cross in 70 seconds , is : 
Options: a ) 245 , b ) 276 , c ) 987 , d ) 168 , e ) 1981
[EX A]:
a