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'.
--------
Question: Problem: a mixture contains alcohol and water in the ratio 4 : 3 . if 8 litres of water is added to the mixture , the ratio becomes 4 : 5 . find the quantity of alcohol in the given mixture
Options: a ) 15 litres , b ) 10 litres , c ) 30 litres , d ) 22 litres , e ) 16 litres

Answer: e

Question: Problem: if a ( a - 2 ) = 2 and b ( b - 2 ) = 2 , where a = b , then a + b =
Options: a ) 1 , b ) 2 , c ) 4 , d ) 46 , e ) 48

Answer: a

Question: Problem: having scored 97 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 ) 26 , d ) 22 , e ) 25

Answer:
e