 
 <translate> A's one day's work = 1/18
B's one day's work = 1/24
(A + B)'s one day's work = 1/18 + 1/24 = 7/72
The part of the work completed in 3 days = 2 (7/72) = 7/36. So the answer is (A). <ibo> A bụ ọrụ otu ụbọchị = 1/18 B bụ otu ụbọchị ọrụ = 1/24 (A + B) bụ otu ụbọchị ọrụ = 1/18 + 1/24 = 7/72 Akụkụ nke ọrụ ahụ a rụzuru n'ime ụbọchị 3 = 2 (7/72) = 7/36. Ya mere azịza ya bụ (A). 