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: ravi and sunil are partners in a business . ravi invests rs . 20,000 for 8 months and sunil invested rs . 16000 for 10 months then after one year ratio of their profits will be 
Options: a ) 1 : 1 , b ) 2 : 3 , c ) 3 : 2 , d ) 3 : 1 , e ) 3 : 4
[EX A]: a

[EX Q]: Problem: by selling 16 pens for a rupee a woman loses 5 % . how many for a rupee should he sell in order to gain 18 % ? 
Options: a ) 12 , b ) 14 , c ) 45 , d ) 13 , e ) 65
[EX A]: d

[EX Q]: Problem: the cost price of an article is 64 % of the marked price . calculate the gain percent after allowing a discount of 15 % ? 
Options: a ) 32.8 % , b ) 37.6 % , c ) 38.5 % , d ) 17.5 % , e ) 37.2 %
[EX A]:
a