Alam starts working on a job and works on it for 12 days and compete the rest of hte work in 12 days. How long (in days) will it take Babu to complete the job if he works alone?

প্রশ্নঃ Alam starts working on a job and works on it for 12 days and compete the rest of hte work in 12 days. How long (in days) will it take Babu to complete the job if he works alone?