Welcome to Bytelearn!

Let’s check out your problem:

Sarah has whole milk, which contains $3.25\%$ butterfat by volume, and one type of low-fat milk, which contains $1\%$ butterfat by volume. Which of the following systems could be used to determine the amount of whole milk, $\newline$$w$, in ounces, and the amount of low-fat milk, $l$, in ounces, that Sarah should mix to obtain $32$ ounces of a low-fat milk with $2\%$ butterfat by volume?$\newline$Choose $1$ answer:$\newline$(A) $0.01 l+0.0325 w=32$$\newline$ $\space$$\space$$\space$$\space$$\space$$\space$$\space$$l+w=0.02$$\newline$(B) $0.01 l+0.0325 w=32$$\newline$$\space$$\space$$\space$$\space$$\space$$\space$$\space$$l+w=0.64$$\newline$(C) $0.01 l+0.0325 w=0.2$$\newline$ $\space$$\space$$\space$$\space$$\space$$\space$$\space$$l+w=32$$\newline$(D) $0.01 l+0.0325 w=0.64$$\newline$ $\space$$\space$$\space$$\space$$\space$$\space$$\space$$l+w=32$$\newline$