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'.

[EX Q]: Problem: how many numbers from 19 to 79 are exactly divisible by 11 ? 
Options: a ) 5 , b ) 6 , c ) 9 , d ) 11 , e ) 12
[EX A]: b

[EX Q]: Problem: a , b and c have rs . 450 between them , a and c together have rs . 200 and b and c rs . 350 . how much does c have ? 
Options: a ) a ) 100 , b ) b ) 110 , c ) c ) 120 , d ) d ) 130 , e ) e ) 140
[EX A]: a

[EX Q]: Problem: ( 128.5 x 4 ) + ( 13.8 x 5 ) = ? x 10 
Options: a ) 524.48 , b ) 556.02 , c ) 58.3 , d ) 585.64 , e ) 595.46
[EX A]:
c