 
 <translate> A rancher owns a mixture of 8 sheep and 5 cattle that graze on his land. In a typical year, the rancher will allow his animals to feed off his pastures for as long as possible before they run out of grass. After the pastures run out of grass, he must buy feed corn for $10 per bag. Each cow eats 2 acres of grass per month, and each sheep eats 1 acre of grass per month. Additionally, a bag of feed corn can feed each cow for 1 month and each sheep for 2 months.  If the rancher's pasture contains 144 acres of grass, how much will the rancher need to spend on feed corn to feed his animals each year? Let's answer step by step: <ibo> Otu onye ọrụ ugbo nwere atụrụ asatọ na ehi ise na-ata ahịhịa n'ala ya. N'afọ ọ bụla, onye na-azụ anụ na-ekwe ka anụmanụ ya na-ata nri n'ebe ọ na-azụ ha ruo ogologo oge o kwere mee tupu ahịhịa agwụnahụ ha. Mgbe ahịhịa gwụchara n'ebe ịta nri ahụ, ọ ghaghị ịzụta ọka e ji azụ anụ n'ọnụ ego dị $10 kwa akpa. Ehi ọ bụla na-eri ahịhịa ruru hekta abụọ kwa ọnwa, atụrụ ọ bụla na-erikwa ahịhịa ruru otu hekta kwa ọnwa. Tụkwasị na nke ahụ, otu akpa ọka e ji eme nri pụrụ inye ehi ọ bụla nri ruo otu ọnwa na atụrụ ọ bụla nri ruo ọnwa abụọ. Ọ bụrụ na ala ebe onye nwe ugbo ahụ na-ata ahịhịa dị otu narị hekta na iri anọ na anọ, ego ole ka onye nwe ugbo ahụ ga-emefu n'ịzụrụ ọka e ji enye anụmanụ ya nri kwa afọ? Ka anyị zaa ya otu otu: 