P can do a piece of work in 28 days. He works at it for 7 days and then Q finished it in 18 days. How long will they together take to complete the work ? 0

P can do a piece of work in 28 days. He works at it for 7 days and the

1.	P can do a piece of work in 28 days. He works at it for 7 days and then Q finished it in 18 days. How long will they together take to complete the work ? 0
A.	168/13
B.	181/13
C.	182/13
D.	169/13
Answer» B. 181/13

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P can do a piece of work in 28 days. He works at it for 7 days and then Q finished it in 18 days. How long will they together take to complete the work ? 0

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