TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: two pipes a and b can separately fill a cistern in 60 minutes and 75 minutes respectively . there is a third pipe in the bottom of the cistern to empty it . if all the three pipes are simultaneously opened , then the cistern is full in 50 minutes . in how much time , the third pipe alone can empty the cistern ?

SOLUTION: 100 min

PROBLEM: Problem: you enter a weight loss challenge game and manage to lose 12 % 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 ?

SOLUTION: 10.24 %

PROBLEM: Problem: 40 is subtracted from 70 % of a number , the result is 30 . find the number ?

SOLUTION:
10