প্রশ্ন সংশোধন করুন
প্রশ্ন:
X can complete a certain work in the same time in which Y and Z together can do it . If X and Y together can finish it in 10 days and Z alone in 15 days , then Y alone can do it in ?
X can complete a certain work in the same time in which Y and Z together can do it . If X and Y together can finish it in 10 days and Z alone in 15 days , then Y alone can do it in ?