In this task, you need to provide the correct option for a given problem from the provided options.
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Question: Problem: the marks obtained by vijay and amith are in the ratio 6 : 5 and those obtained by amith and abhishek in the ratio of 3 : 2 . the marks obtained by vijay and abhishek are in the ratio of ? 
Options: a ) 1 : 5 , b ) 4 : 5 , c ) 9 : 5 , d ) 9 : 8 , e ) 9 : 7

Answer: c


Question: Problem: two numbers are in the ratio 3 : 4 . if their l . c . m . is 72 . what is sum of the numbers ? 
Options: a ) 42 , b ) 56 , c ) 76 , d ) 84 , e ) 85

Answer: a


Question: Problem: solution a is made up of alcohol and water mixed in the ratio of 21 : 4 by volume ; solution b is made up of alcohol and water mixed in the ratio of 2 : 3 by volume . if solution a and solution b are mixed in the ratio of 5 : 6 by volume , what percent of the resultant mixture is alcohol ? 
Options: a ) 32.5 % , b ) 40 % , c ) 60 % , d ) 65 % , e ) can not be determined

Answer:
c