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Sunita can finish a piece of work in 27 days, and Kamla can finish the same work in 54 days. If they work together, in how many days will the work be done?

Competition practiceTime & Work / Pipes
  • A18
  • B40.5
  • C13.5
  • D20

Step-by-Step Solution

Together they do 1/27 + 1/54 = 2/54 + 1/54 = 3/54 = 1/18 of the work per day, so 18 days.
Answer: A) 18

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