instruction:
In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
question:
Problem: a man can row his boat with the stream at 19 km / h and against the stream in 11 km / h . the man ' s rate is ? 
Options: a ) 4 kmph , b ) 2 kmph , c ) 7 kmph , d ) 8 kmph , e ) 3 kmph
answer:
a


question:
Problem: a person buys an article at rs . 500 . at what price should he sell the article so as to make a profit of 35 % ? 
Options: a ) 600 , b ) 887 , c ) 256 , d ) 654 , e ) 675
answer:
e


question:
Problem: in an election between two candidates , one got 55 % of the total valid votes , 20 % of the votes were invalid . if the total number of votes was 7000 , the number of valid votes that the other candidate got , was : 
Options: a ) 2800 , b ) 2700 , c ) 2900 , d ) 2200 , e ) 2520
answer:

e