instruction:
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: if 20 typists can type 50 letters in 30 minutes , then how many letters will 40 typists working at the same rate complete in 1 hour ? 
Options: a ) 400 , b ) 500 , c ) 350 , d ) 250 , e ) 200
answer:
a


question:
Problem: a car takes 6 hours to cover a distance of 504 km . how much should the speed in kmph be maintained to cover the same direction in 3 / 2 th of the previous time ? 
Options: a ) 48 kmph , b ) 50 kmph , c ) 52 kmph , d ) 56 kmph , e ) 60 kmph
answer:
d


question:
Problem: in what time will a train 100 m long cross an electric pole , it its speed be 216 km / hr ? 
Options: a ) 2.5 sec , b ) 2.9 sec , c ) 1.7 sec , d ) 7.5 sec , e ) 2.4 sec
answer:

c