 
<translate> Nau'o'i uku na madara suna da kashi 2 cikin ɗari, kashi 3 cikin ɗari da kuma kashi 5 cikin ɗari na mai. Idan x gallons na kashi 2 cikin dari, y gallons na kashi 3 cikin dari, da z gallons na kashi 5 cikin dari an haxa su don samun x + y + z gallons na kashi 4 cikin dari, menene x dangane da y da z? Zaɓuɓɓuka: (A) y + 3z (B) (y + z) / 4 (C) 2y + 3z (D) z/2 (E) 3y + 4.5z Bari mu fara tunani. Ruwa na sani: <eng> 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: 