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

[Q]: Problem: sachin is younger than rahul by 18 years . if the ratio of their ages is 7 : 9 , find the age of sachin
Options: a ) 24.5 , b ) 63 , c ) 65 , d ) 36 , e ) 24.19
[A]: b

[Q]: Problem: the ratio of spinsters to cats is 2 to 7 . if there are 55 more cats than spinsters , how many spinsters are there ?
Options: a ) 20 , b ) 21 , c ) 22 , d ) 23 , e ) 24
[A]: c

[Q]: Problem: if 0.75 of a number is equal to 0.025 of another number , the ratio of the numbers is :
Options: a ) 2 : 3 , b ) 3 : 4 , c ) 1 : 30 , d ) 20 : 3 , e ) 30 : 7
[A]:
c