SSC CGL – Combined Graduate Level Examination · प्रश्न 66
X can complete a project in 14 days, Y in 10 days. When Z joins them, the work is finished in 3.5 days. How many days would Z need alone?
उत्तर देखें और व्याख्या
उत्तर: (B) 8.75 days
व्याख्या
Z's rate = 2/7 − 1/14 − 1/10 = 4/35, so Z alone takes 8.75 days.