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

[EX Q]: Problem: in a ratio which is equal to 7 : 9 , if the antecedent is 42 , then the consequent is ? 
Options: a ) 72 , b ) 54 , c ) 64 , d ) 51 , e ) 45
[EX A]: b

[EX Q]: Problem: the number of sailors on a ship is 50 % more than the number of officers . the ratio of sailors to officers would be 
Options: a ) 33 : 25 , b ) 47 : 20 , c ) 3 : 2 , d ) 22 : 25 , e ) 97 : 50
[EX A]: c

[EX Q]: Problem: if a student loses 5 kilograms , he will weigh twice as much as his sister . together they now weigh 110 kilograms . what is the student ' s present weight in kilograms ? 
Options: a ) 71 , b ) 72 , c ) 73 , d ) 74 , e ) 75
[EX A]:
e