In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[EX Q]: Problem: joe ’ s average ( arithmetic mean ) test score across 4 equally weighted tests was 35 . he was allowed to drop his lowest score . after doing so , his average test score improved to 40 . what is the lowest test score that was dropped ? 
Options: a ) 20 , b ) 25 , c ) 55 , d ) 65 , e ) 80
[EX A]: a

[EX Q]: Problem: having scored 95 runs in the 19 th inning , a cricketer increases his average score by 4 . what will be his average score after 19 innings ? 
Options: a ) 28 , b ) 27 , c ) 23 , d ) 22 , e ) 24
[EX A]: c

[EX Q]: Problem: if x and y are integers such that x ^ 2 = 3 y and xy = 36 , then x – y = ? 
Options: a ) - 30 , b ) - 20 , c ) - 5 , d ) 5 , e ) 0
[EX A]:
e