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'.

[EX Q]: Problem: each week a restaurant serving mexican food uses the same volume of chili paste , which comes in either 35 - ounce cans or 25 - ounce cans of chili paste . if the restaurant must order 20 more of the smaller cans than the larger cans to fulfill its weekly needs , then how manysmallercans are required to fulfill its weekly needs ? 
Options: a ) 60 , b ) 70 , c ) 80 , d ) 100 , e ) 120
[EX A]: b

[EX Q]: Problem: there are two numbers . if 20 % of the first number is added to the second number , then the second number increases to its 5 - fourth . what is the ratio of the first number to the second number ? 
Options: a ) 2 : 9 , b ) 3 : 8 , c ) 8 : 5 , d ) 5 : 4 , e ) 7 : 3
[EX A]: d

[EX Q]: Problem: john is 3 times as old as sam . if john will be twice as old as sam in 9 years , how old was sam two years ago ? 
Options: a ) 2 , b ) 4 , c ) 6 , d ) 8 , e ) 7
[EX A]:
e