Smita, Monica and Reema can type a 50 page document in 4 hrs, if they work together. Smita herself can type it in 12 hrs and Reema can do it in 10 hours. Monica alone can type in it

  • 18 hours
  • 15 hours
  • 12 hours
  • 10 hours

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Smita, Monica and Reema can type a 50 page document in 4 hrs, if they work together. Smita herself c
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