 
 <translate> At what rate percent on simple interest will a sum of money double itself in 30 years?
Options:
(A) 3 1/3%
(B) 3 1/9%
(C) 3 9/3%
(D) 3 2/3%
(E) 3 6/3% Think first, then make a decision. Some random thoughts: <ibo> Gịnị ka ọ ga-abụ ego mmadụ gbazitere n'afọ iri atọ, ya abawanye okpukpu abụọ ma ọ bụrụ na ọ gbazitere ya naanị otu ụzọ n'ụzọ iri? Nhọrọ: (A) 3 1/3% (B) 3 1/9% (C) 3 9/3% (D) 3 2/3% (E) 3 6/3% Buru ụzọ chee echiche, kpebizie ihe ị ga-eme. Ụfọdụ echiche na-enweghị isi: 