In this task, you need to provide the correct option for a given problem from the provided options.

[EX Q]: Problem: the compound ratio of 5 : 6 , 3 : 2 and 4 : 5 is ? 
Options: a ) 3 : 5 , b ) 2 : 7 , c ) 1 : 1 , d ) 1 : 4 , e ) none
[EX A]: c

[EX Q]: Problem: a company conducted a survey about its two brands , a and b . x percent of respondents liked product a , ( x – 20 ) percent liked product b , 23 percent liked both products , and 23 percent liked neither product . what is the minimum number w of people surveyed by the company ? 
Options: a ) 46 , b ) 80 , c ) w . 90 , d ) w . 100 , e ) 200
[EX A]: d

[EX Q]: Problem: the present ratio of students to teachers at a certain school is 45 to 1 . if the student enrollment were to increase by 50 students and the number of teachers were to increase by 5 , the ratio of students to teachers would then be 25 to 1 . what is the present number of teachers ? 
Options: a ) 4 , b ) 8 , c ) 10 , d ) 12 , e ) 15
[EX A]:
a

