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

[EX Q]: Problem: a class has a ratio of 3 : 6 : 7 of children with red hair , blonde hair and black hair respectively . if the class has 9 kids with red hair , how many kids are in the class ?
Options: a ) 99 , b ) 48 , c ) 16 , d ) 22 , e ) 60
[EX A]: b

[EX Q]: Problem: income and expenditure of a person are in the ratio 10 : 7 . if the income of the person is rs . 10000 , then find his savings ?
Options: a ) 3005 , b ) 3098 , c ) 3300 , d ) 3010 , e ) 3000
[EX A]: e

[EX Q]: Problem: in the biotechnology class of 2000 , there were x graduates . 32 of the graduates found a job , 45 continued on to their second degree and 13 did both . if only 9 people did n ' t do both , what is x equal to ?
Options: a ) 69 . , b ) 71 , c ) 73 , d ) 75 , e ) 76
[EX A]:
c