How long would 12 men need to do a job that 8 men can do in 9 days?

U can use the method proportion to solve this problem. 8/9 is equal to 12/x
Step1: multiply 12 and 9
Step2: divide it by 8 to get x which is your answer.
The Answer Is: 13.5 days or as in 13 days and 12 hours

Days        Men          For every day you lose, you add one man. For                                          every man you lose, add one day. In this process,                                      you will make a pattern that will help determine the                                    number of men and days required.                           5             12
6              11
7              10
8              9
9              8
10            7
11            6