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

Example Input: Problem: a number x is 5 times another number y . the percentage that y is less than x is
Example Output: 80 %

Example Input: Problem: a dealer purchases 15 articles for rs . 25 and sells 12 articles for rs . 32 . find the profit percentage ?
Example Output: 60 

Example Input: Problem: solution y is 20 percent liquid x and 80 percent water . if 2 kilograms of water evaporate from 8 kilograms of solution y and 2 kilograms of solution y are added to the remaining 6 kilograms of liquid , what percent of this new solution is liquid x ?
Example Output:
25