To a complete a work, A and B take 12 days; B and C 15 days; C and A 2 – McqOptions

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1.	To a complete a work, A and B take 12 days; B and C 15 days; C and A 20 days. How long A, B and C together will take?
A.	18 days
B.	15 days
C.	10 days
D.	11 days
Answer» D. 11 days

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