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

Input: Consider Input: Problem: a is half good a work man as b and together they finish a job in 14 days . in how many days working alone b finish the job ?

Output: 21

Input: Consider Input: Problem: if the average of 5 x and 8 y is greater than 90 , and x is twice y , what is the least integer value of x ?

Output: 4

Input: Consider Input: Problem: a survey of n people in the town of eros found that 50 % of them preferred brand a . another survey of 125 people in the town of angie found that 60 % preferred brand a . in total , 55 % of all the people surveyed together preferred brand a . what is the total number of people surveyed ?
Output: 25