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

Example Input: Problem: two cubes have their volumes are in the ratio 1 : 27 . find the ratio of their surface area ?
Example Output: 1 : 9', 'd ) 2 : 7', 'e ) 3 : 11'

Example Input: Problem: there are 750 male and female participants in a meeting . half the female participants and one - quarterof the male participants are democrats . one - third of all the participants are democrats . how many of the democrats are female ?
Example Output: 125

Example Input: Problem: in a family 16 people eat only vegetarian , 9 people eat only non veg . , 12 people eat both veg and non veg . . how many people eat veg in the family ?
Example Output:
28