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A and B alone can do a work in 12 and 18 days respectively. A, B and C together can do the same work in 6 days. In how many days can C do t…

358549Medium DSSSB TGT Computer Science 0 replies 0 views
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A and B alone can do a work in 12 and 18 days respectively. A, B and C together can do the same work in 6 days. In how many days can C do the work alone?
  • A24
  • B36
  • C30
  • D48
Correct answer: B

Explanation

Work of A and B in 1 day = 1/12 + 1/18 = 5/36. C's one-day work = 1/6 – 5/36 = 1/36, so C alone takes 36 days.

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