 
 <translate> Question: Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is?
Options:
(A) 60 gallons
(B) 100 gallons
(C) 120 gallons
(D) 180 gallons
(E) 130 gallons Random thoughts: <ibo> Ajụjụ: Ngwunye abụọ nwere ike imeju otu tankị mmiri n'ime nkeji iri abụọ na nkeji iri abụọ na anọ nakwa na otu ọkpọkọ nwere ike imeju galọn mmiri atọ n'otu nkeji. Ọ bụrụ na ọkpọkọ atọ ahụ arụkọ ọrụ ọnụ, ọ ga-ewe nkeji iri na ise tupu ha niile eju n'ime tank ahụ. Ike nke tankị ahụ bụ? Nhọrọ: (A) 60 galọn (B) 100 galọn (C) 120 galọn (D) 180 galọn (E) 130 galọn Echiche na-enweghị isi: 