Question

At Gibson's froze yogurt shop you pay by the ounce. Jordan paid $4.80 for 12 ounces of frozen yogurt. a. How much would it cost for 20 ounces of yogurt?b. If Tre spent $7.20 on yogurt, how many ounces did he buy?(proportions)

Answer 1

We've been told from the question that Jordan paid $4.80 for 12 ounces of yogurt, let's go ahead and solve question a;

a.

$\begin{gathered} \text{If \ 4.80 }\rightarrow12ounces \\ x\rightarrow20ounces \\ \therefore x=\frac{20\ast4.8}{12}=\frac{96}{12}=8 \end{gathered}$

So, 20 ounces of yougurt would cost $8.

b.

$\begin{gathered} \text{If \ 4.8}\rightarrow12ounces \\ \text{Then \ }7.20\rightarrow y \\ \therefore y=\frac{12\ast7.20}{4.8}=\frac{86.4}{4.8}=18 \end{gathered}$

So, $7.20 would buy 18ounces of yogurt.