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'.

[EX Q]: Problem: exactly 5 % of the reporters for a certain wire service cover local politics in country x . if 30 % of the reporters who cover politics for the wire service do not cover local politics in country x , what percent of the reporters for the wire service do not cover politics ? 
Options: a ) 20 % , b ) 42 % , c ) 44 % , d ) 92 % , e ) 90 %
[EX A]: d

[EX Q]: Problem: a watch was sold at a loss of 21 % . if it was sold for rs . 140 more , there would have been a gain of 4 % . what is the cost price ? 
Options: a ) 560 , b ) 882 , c ) 799 , d ) 778 , e ) 901
[EX A]: a

[EX Q]: Problem: the manufacturing cost of a shoe is rs . 180 and the transportation lost is rs . 500 for 100 shoes . what will be the selling price if it is sold at 20 % gains 
Options: a ) rs 222 , b ) rs 216 , c ) rs 220 , d ) rs 210 , e ) rs 217
[EX A]:
a