Question
Reena and Teena together can do a piece of work in 60 days. Teena and Meena together can do it in 40 days. Reena starts the work and works on it for 10 days, then Teena takes up work for 30 days. Finally Meena finishes the work in 36 days. The number of days in which Meena alone can do the work where doing separately is
According to the question, Reena = 10 Teena = 10 + 20 Meena = 20 + 16 Work Done by (Reena + Teena) in 10 days = 2 × 10 = 20 units Work Done by (Teena + Meena) in 10 days = 3 × 20 = 60 units Total work (Finished till now) = 80 units Remaining Work = 120 – 80 = 40 units Here we find that Meena does remaining 40 units in 16 days Meena’s efficiency = work/day = 40/16 = 5/2 Therefore, time taken by Meena alone to complete the work = 120 × `2/5` = 48 days More Time and work Questions
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