Task: Question Answering
Input (English): Problem: in a certain accounting class of 90 students , 70 % of the students took the final exam on the assigned day while the rest of the students took the exam on a make - up date . if the students on the assigned day had an average score of 65 % , and the students on the make - up date had an average score of 85 % , what was the average score for the entire class ? 
Options: a ) 68 % , b ) 71 % , c ) 73 % , d ) 75 % , e ) 79 %
Output (English): b