 <translate> Nau'o'i uku na madara suna da kashi 1 cikin ɗari, kashi 5 cikin ɗari da kuma kashi 3 cikin ɗari na mai. Idan x gallons na kashi 1 cikin dari, y gallons na kashi 5 cikin dari, da z gallons na kashi 3 cikin dari an haxa su don samun x + y + z gallons na kashi 7 cikin dari, menene x dangane da y da z? Zaɓuɓɓuka: (A) -1y - 2z (B) (y + z) / 4 (C) 2y + 3z (D) 3y + z (E) 3y + 4.5z Hmmm, rafi na sani: <ibo> Ụdị mmiri ara ehi atọ nwere pasent 1 nke abụba, pasent 5 na pasent 3 nke abụba. Ọ bụrụ na x gallons nke 1 percent ọkwa, y gallons nke 5 percent ọkwa, na z gallons nke 3 percent ọkwa na-agwakọta na-enye x + y + z gallons nke a 7 percent ọkwa, ihe bụ x na okwu nke y na z? Nhọrọ: (A) -1y - 2z (B) (y + z) / 4 (C) 2y + 3z (D) 3y + z (E) 3y + 4.5z Hmmm, m stream nke nsụhọ: 