Time & Work · Question 15 · Hard

Time & Work question 15

Nikhil and Omkar can finish a project alone in 18 days and 24 days respectively. With the help of Pooja, the three of them finish it in 8 days. How many days would Pooja alone take?

  1. 48 days
  2. 72 days
  3. 30 days
  4. 36 days
Answer and explanation

Answer: D. 36 days

Explanation: Pooja's rate = 1/8 − 1/18 − 1/24 = (9 − 4 − 3)/72 = 2/72 = 1/36, so she alone needs 36 days.

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