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

Example Input: Problem: students at a school were on average 180 cm tall . the average female height was 170 cm , and the average male height was 182 cms . what was the ratio of men to women ?
Example Output: 5 : 1

Example Input: Problem: 60 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780 . the bigger part is :
Example Output: 45

Example Input: Problem: each of the three people individually can complete a certain job in 3 , 4 , and 6 hours , respectively . what is the lowest fraction of the job that can be done in 1 hour by 2 of the people working together at their respective rates ?
Example Output:
5 / 12