SSC CGL – Combined Graduate Level Examination · प्रश्न 64
The time ratio for X:Y to complete a task is 5:3. Y alone takes 15 hours. How long do X and Y take together?
उत्तर देखें और व्याख्या
उत्तर: (B) 9.375 hrs
व्याख्या
X = 25 h; together 1/(1/25 + 1/15) = 9.375 h.