TASK DEFINITION: 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: Problem: for how many integer values of n will the value of the expression 4 n + 7 be an integer greater than 1 and less than 60 ? 
Options: a ) 10 , b ) 15 , c ) 8 , d ) 12 , e ) 20

SOLUTION: b

PROBLEM: Problem: in country x a returning tourist may import goods with a total value of $ 500 or less tax free , but must pay an 8 percent tax on the portion of the total value in excess of $ 500 . what tax must be paid by a returning tourist who imports goods with a total value of $ 730 ? 
Options: a ) $ 58.40 , b ) $ 40 . 00 , c ) $ 24.60 , d ) $ 18.40 , e ) $ 16.00

SOLUTION: d

PROBLEM: Problem: ravi ' s 4 days average income is 1025.68 . but in a form he should write his average income as the greatest positive even integer less than or equal to his 4 days average income . what is the difference between his real average and form filling average ? 
Options: a ) 2 , b ) 4.3 , c ) 1.68 , d ) 1.5 , e ) 3.2

SOLUTION:
c