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Q:

Ram and Shyam can do a work in 12 days, Shyam and Hari in 15 days, and Hari and Ram in 20 days. Accordingly, in how many days can Rama alone complete that work?

  • 1
    30
  • 2
    32
  • 3
    36
  • 4
    42
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Answer : 1. "30"

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