Answer:
Time taken to fill 40-ounce cup, t = 0.2 x Volume of cup in ounce = 0.2 x 40 = 8 seconds
Explanation:
A soda machine takes 3 seconds to fill a 15-ounce cup.
Time taken to fill 15-ounce cup = 3 seconds
![\texttt{Time taken to fill 1-ounce cup = }(3)/(15)=0.2seconds](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tp7bfnmlrc7yjr1i8n6qtb65614bf07czv.png)
Now we need to find equation for t which is the time to fill a 40-ounce cup.
![t=\texttt{Time taken to fill 40-ounce cup}\\\\t=\texttt{Time taken to fill 1-ounce cup}* 40\\\\t=0.2* 40=8seconds](https://img.qammunity.org/2020/formulas/mathematics/middle-school/hbn7m8g6eag1s3bsqjyuibw8xcfl9hbwwm.png)
Time taken to fill 40-ounce cup, t = 0.2 x Volume of cup in ounce = 0.2 x 40 = 8 seconds