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: john makes $ 65 a week from his job . he earns a raise andnow makes $ 70 a week . what is the % increase ?
Options: a ) 7.69 % , b ) 16.66 % , c ) 17.8 % , d ) 19 % , e ) 21 %
[EX A]: a

[EX Q]: Problem: a number exceeds 20 % of itself by 40 . the number is ?
Options: a ) 50 , b ) 60 , c ) 80 , d ) 320 , e ) none
[EX A]: a

[EX Q]: Problem: a shopkeeper sells 200 metres of cloth for rs . 18000 at a loss of rs . 5 per metre . find his cost price for one metre of cloth ?
Options: a ) 12 , b ) 27 , c ) 29 , d ) 55 , e ) 95
[EX A]:
e