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: when greenville state university decided to move its fine arts collection to a new library , it had to package the collection in 20 - inch by 20 - inch by 15 - inch boxes . if the university pays $ 1.30 for every box , and if the university needs 3.06 million cubic inches to package the collection , what is the minimum amount the university must spend on boxes ?
Options: a ) $ 255 , b ) $ 275 , c ) $ 510 , d ) $ 1,250 , e ) $ 663
[A]: e

[Q]: Problem: when a number is divided by 6 & then multiply by 12 the answer is 8 what is the no . ?
Options: a ) 4.5 , b ) 5 , c ) 5.5 , d ) 5.8 , e ) 4
[A]: e

[Q]: Problem: a man is 30 years older than his son . in four years , his age will be twice the age of his son . the present age of this son is
Options: a ) 22 years , b ) 23 years , c ) 24 years , d ) 25 years , e ) 26 years
[A]:
e