A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days

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Q 1462691535.     A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in:
A

15 days

B

20 days

C

25 days

D

30 days

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(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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