 
 <translate> Three grades of milk are 2 percent, 3 percent and 5 percent fat by volume. If x gallons of the 2 percent grade, y gallons of the 3 percent grade, and z gallons of the 5 percent grade are mixed to give x+y+z gallons of a 4 percent grade, what is x in terms of y and z?
Options:
(A) y + 3z
(B) (y +z)  / 4
(C) 2y + 3z
(D) z/2
(E) 3y + 4.5z Let's think first. Stream of consciousness: <ibo> Ụdị mmiri ara ehi atọ nwere pasent 2 nke abụba, pasent 3 na pasent 5 nke abụba. Ọ bụrụ na x gallons nke 2 percent ọkwa, y gallons nke 3 percent ọkwa, na z gallons nke 5 percent ọkwa na-agwakọta na-enye x + y + z gallons nke 4 percent ọkwa, ihe bụ x na okwu nke y na z? Nhọrọ: (A) y + 3z (B) (y + z) / 4 (C) 2y + 3z (D) z/2 (E) 3y + 4.5z Ka anyị buru ụzọ chee echiche. Mmiri nke ịmara: 