DSSSB · Mathematics

P, Q and R can complete a work in 8, 12 and 24 days respectively. They start working together, but after 3 days P leaves the work and is joined by S, who alone can complete the work in 6 days. How much more time will Q, R and S take to complete the work?

  1. 4/5 days
  2. 5/7 day
  3. 6/7 days
  4. 5/9 day
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