 
 <translate> A's one day's work = 1/30
B's one day's work = 1/45
(A + B)'s one day's work = 1/30 + 1/45 = 1/18
The part of the work completed in 2 days = 2 (1/18) = 1/9.
The final answer: (D). <ibo> A bụ otu ụbọchị ọrụ = 1/30 B bụ otu ụbọchị ọrụ = 1/45 (A + B) bụ otu ụbọchị ọrụ = 1/30 + 1/45 = 1/18 Akụkụ nke ọrụ ahụ a rụzuru n'ime ụbọchị 2 = 2 (1/18) = 1/9. Azịza ya bụ: (D). 