P and Q can do a work alone in 28 days and 18 days. Q started working before 3 days of the completion of the work and P worked only for 7 days. Another person R worked for all days and total work done in 14 days. What would be the number of days taken by all three to complete the work if they start working together and do the work till completion?

P and Q can do a work alone in 28 days and 18 days. Q started working

1.	P and Q can do a work alone in 28 days and 18 days. Q started working before 3 days of the completion of the work and P worked only for 7 days. Another person R worked for all days and total work done in 14 days. What would be the number of days taken by all three to complete the work if they start working together and do the work till completion?
A.	8 9 days 67
B.	7 35 days 67
C.	6 3 days 11
D.	8 35 days 72
E.	None of these
Answer» C. 6 3 days 11

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