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

Q: Problem: sachin is older than rahul by 7 years . if the ratio of their ages is 11 : 9 , find the age of sachin 
Options: a ) 24.5 , b ) 24.8 , c ) 38.5 , d ) 24.88 , e ) 24.19

A: c
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Q: Problem: from a container having pure milk , 20 % is replaced by water and the process is repeated thrice . at the end of the third operation , the milk is 
Options: a ) 40 % pure , b ) 50 % pure , c ) 51.2 % pure , d ) 58.8 % pure , e ) none

A: c
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Q: Problem: divide $ 600 among a , b in the ratio 1 : 3 . how many $ that a get ? 
Options: a ) $ 50 , b ) $ 500 , c ) $ 150 , d ) $ 250 , e ) $ 600

A:
c
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