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Aman and Ajay can build a wall in 9 days and 12 days respectively. In how many days can they finish the work if they work together?
- A\(5\frac{1}{7}\)
- B\(11\frac{1}{2}\)
- C2
- D7
Answer not set
Discussion 1
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CCommunity
⇒ Aman’s efficiency = 1/9
⇒ Ajay’s efficiency = 1/12
⇒ Efficiency of Ajay and Aman together = (1/9) + (1/12) = 7/36
⇒ Time taken = 36/7 = $(5\frac{1}{7})$
⇒ Ajay’s efficiency = 1/12
⇒ Efficiency of Ajay and Aman together = (1/9) + (1/12) = 7/36
⇒ Time taken = 36/7 = $(5\frac{1}{7})$