Answer: 26 sodas.
Explanation:
Let be "x" the number of regular sodas that were sold in that day.
You know that the the ratio of diet sodas sold to regular sodas sold was:
![7 : 6](https://img.qammunity.org/2020/formulas/mathematics/high-school/n0ew05isvfhbjmtdgb6fx31cxusglsxza9.png)
This ratio can also be written as a fraction:
![(7)/(6)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ydpkaulfzalh68xqrtax9f95pti6bc0l6w.png)
Knowing that in that day they sold 14 diet sodas, you can write the following proportion:
![(7)/(6)=(14)/(x)](https://img.qammunity.org/2020/formulas/mathematics/high-school/1cf83tlsy0gkvk1rd4j2kakk6dvaf7j6ye.png)
Now solve for "x":
![(x)((7)/(6))=14\\\\x=(14)((6)/(7))\\\\x=12](https://img.qammunity.org/2020/formulas/mathematics/high-school/v321tsd5ngc4bt5f9tigh8indn78q9kky7.png)
Then the total number of sodas sold that day is:
![Total=14\ sodas+12\ sodas=26\ sodas](https://img.qammunity.org/2020/formulas/mathematics/high-school/kdaopdmtnwjt5bkih74jah9lgnaxqv4wvv.png)