
So, Our final answer is 145%
 
        
                    
             
        
        
        
Answer:
   6 hours
Step-by-step explanation:
Let x represent the time in hours it takes the second worker to do the job alone. Then each hour, 1/x of the job gets done by that worker. Similarly, the regular custodian accomplishes 1/3 of the job in each hour. Working together, they do 1/2 of the job each hour:
   1/3 +1/x = 1/2
   1/x = 1/2 -1/3 = 3/6 -2/6 = 1/6 . . . . subtract 1/3 and simplify
   x = 6
It takes the second worker 6 hours to do the same job alone.
 
        
             
        
        
        
Ignore this answer its wrong. I forgot to not save it. Sorry for the confusion. I wanted to delete this answer but I can't.