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=(20\ast4.8)/(12)=(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=(12\ast7.20)/(4.8)=(86.4)/(4.8)=18 \end{gathered}`

So, $7.20 would buy 18ounces of yogurt.