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'.

[Q]: Problem: bert left the house with n dollars . he spent 1 / 4 of this at the hardware store , then $ 9 at the dry cleaners , and then half of what was left at the grocery store . when he got home , he had $ 12 left in his pocket . what was the value of n ?
Options: a ) $ 36 , b ) $ 44 , c ) $ 52 , d ) $ 60 , e ) $ 68
[A]: b

[Q]: Problem: the ages of patrick and michael are in the ratio of 3 : 5 and that of michael and monica are in the ratio of 3 : 5 . if the sum of their ages is 147 , what is the difference between the ages of patrick and monica ?
Options: a ) 48 , b ) 47 , c ) 46 , d ) 49 , e ) 52
[A]: a

[Q]: Problem: change the below lagarithm log 255 = 1 / 2 to exponential form
Options: a ) 5 , b ) 8 , c ) 7 , d ) 10 , e ) 11
[A]:
a