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

Ex Input:
Problem: you enter a weight loss challenge game and manage to lose 13 % of your body weight . for the final weigh in you are forced to wear clothes that add 2 % to your weight . what percentage of weight loss is measured at the final weigh in ?

Ex Output:
11.26 %


Ex Input:
Problem: what is the range of all the roots of | x ^ 2 - 4 | = x ?

Ex Output:
3


Ex Input:
Problem: the grade point average of the entire class is 90 . if the average of one third of the class is 96 , what is the average of the rest ?

Ex Output:

87