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

Input: Consider Input: Problem: last year elaine spent 20 % of her annual earnings on rent . this year she earned 35 % more than last year and she spent 30 % of her annual earnings on rent . the amount she spent on rent this year is what percent of the amount spent on rent last year ?

Output: 202.5

Input: Consider Input: Problem: virginia , adrienne , and dennis have taught history for a combined total of 96 years . if virginia has taught for 9 more years than adrienne and for 12 fewer years than dennis , for how many years has dennis taught ?

Output: 4

Input: Consider Input: Problem: if two painters can complete two rooms in two hours , how many hours 10 painters would it take to do 20 rooms ?
Output: 4