 
<translate> P na Q nwere ike ịrụcha ọrụ n'ime ụbọchị iri abụọ na ụbọchị iri na abụọ. P n'onwe ya malitere ọrụ ahụ ma Q sonyeere ya mgbe ụbọchị 4 gasịrị ruo mgbe arụchara ọrụ ahụ. Ogologo oge hà aṅaa ka ọrụ ahụ were? Nhọrọ: (A) Ụbọchị ise (B) Ụbọchị 9 (C) Ụbọchị iri atọ (D) Ụbọchị iri abụọ (E) Ụbọchị 10 Buru ụzọ chee echiche, kpezie. Ụfọdụ echiche na-enweghị isi: <eng> P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last?
Options:
(A) 5 days
(B) 9 days
(C) 30 days
(D) 20 days
(E) 10 days Think first, then make a decision. Some random thoughts: 