 
 <translate> Two pipes A and B can fill a tank in 36 hours and 45 hours respectively. If both the pipes are opened simultaneously, how much time will be taken to fill the tank?
Options:
(A) 20 hrs
(B) 22 hrs
(C) 23 hrs
(D) 24 hrs
(E) 21 hrs Stream of consciousness: <ibo> Ngwunye abụọ bụ́ A na B pụrụ imeju otu tank n'ime awa 36 na awa 45 n'otu n'otu. Ọ bụrụ na e meghee ọkpọkọ abụọ ahụ n'otu oge, ogologo oge hà aṅaa ka ọ ga-ewe iji mejupụta tank ahụ? Nhọrọ: (A) Awa iri abụọ (B) 22 awa (C) 23 awa (D) 24 awa (E) Awa iri abụọ na otu Akụkọ banyere akọnuche: 