A, B and C can complete a work in 10, 15 and 20 days respectively. A a – McqOptions

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1.	A, B and C can complete a work in 10, 15 and 20 days respectively. A and B start it together. B is replaced by C after 2 days. A leave it after one more day. In how many days work was completed?
A.	13
B.	(13 {1 over 13 } )
C.	(18 {4 over 3 } )
D.	18
Answer» C. (18 {4 over 3 } )

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