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'.

Problem: the total price of a basic computer and printer are $ 2,500 . if the same printer had been purchased with an enhanced computer whose price was $ 500 more than the price of the basic computer , then the price of the printer would have been 2 / 5 of that total . what was the price of the basic computer ? 
Options: a ) 1300 , b ) 1600 , c ) 1750 , d ) 1900 , e ) 2000
a

Problem: the average age of 7 men increases by 4 years when two women are included in place of two men of ages 26 and 30 years . find the average age of the women ? 
Options: a ) 42 , b ) 40 , c ) 30 , d ) 18 , e ) 11
a

Problem: if ( t - 8 ) is a factor of t ^ 2 - kt - 47 , then k = 
Options: a ) 16 , b ) 12 , c ) 2 , d ) 6 , e ) 14

d