The task is to generate the correct answer for a given math problem.

[Q]: Problem: two numbers are in the ratio of 7 : 6 . if 18 be subtracted from each , they are in the ratio of 6 : 5 . find the numbers ?
[A]: 7,6


[Q]: Problem: by selling an article for $ 195 , a person gains $ 45 . what is the gain % ?
[A]: 30 %


[Q]: Problem: if henry were to add 8 gallons of water to a tank that is already 3 / 4 full of water , the tank would be 7 / 8 full . how many gallons of water would the tank hold if it were full ?
[A]:
64


