In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
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Question: Problem: if z is not equal to zero , and z = 6 zs 9 s 2 z = 6 zs 9 s 2 , then z equals :
Options: a ) s , b ) 3 s , c ) 4 s , d ) - 3 s , e ) - 4 s

Answer: b

Question: Problem: solution x is 10 percent alcohol by volume , and solution y is 30 percent alcohol by volume . how many milliliters of solution y must be added to 150 milliliters of solution x to create a solution that is 25 percent alcohol by volume ?
Options: a ) 250 / 3 , b ) 500 / 3 , c ) 400 , d ) 450 , e ) 600

Answer: d

Question: Problem: 123 : 36 : : 221 : ?
Options: a ) 52 , b ) 69 , c ) 72 , d ) 25 , e ) 32

Answer:
d