SSC CGL – Combined Graduate Level Examination · ప్రశ్న 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?
సమాధానం చూపించు & వివరణ
సమాధానం: (B) 8.75 days
వివరణ
Z's rate = 2/7 − 1/14 − 1/10 = 4/35, so Z alone takes 8.75 days.