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

Answer: b


Question: Problem: the monthly incomes of a and b are in the ratio 5 : 2 . b ' s monthly income is 12 % more than c ' s monthly income . if c ' s monthly income is rs . 14000 , then find the annual income of a ? 
Options: a ) rs . 420000 , b ) rs . 180000 , c ) rs . 201600 , d ) rs . 470400 , e ) none of these

Answer: d


Question: Problem: an ore contains 25 % of an alloy that has 90 % iron . other than this , in the remaining 75 % of the ore , there is no iron . how many kilograms of the ore are needed to obtain 60 kg of pure iron ? 
Options: a ) 250 kg , b ) 275 kg , c ) 300 kg , d ) 266.66 kg , e ) none

Answer:
d