Given:
• Each person needs 6 ounces of dough and 4 ounces of sauce.
,
• Total of 130 ounces of dough and sauce all together.
Let x be the number of persons.
So, the equation is,
6x+4x=130
Solving the equation, we get
![\begin{gathered} 6x+4x=130 \\ 10x=130 \\ x=13 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/e3a7auwy14x6g09763sozqw6eh8haffhz2.png)
So, there are 13 persons.
a) To find the number of ounces of dough were used at the party:
Since, 6x is the number of ounces of dough were used at the party.
So,
![13*6=78\text{ ounces}](https://img.qammunity.org/2023/formulas/mathematics/college/lomqz2ccwh77v9ggjjkus6zrejpcv17kjv.png)
Hence, the number of ounces of dough were used at the party is 78 ounces.
b) To find the number of ounces of sauce were used at the party:
Since, 4x is the number of ounces of sauce were used at the party.
So,
![13*4=52\text{ ounces}](https://img.qammunity.org/2023/formulas/mathematics/college/ujmiw0p74hkbqvpazarlxelvqa4k6jlggy.png)
Hence, the number of ounces of sauce were used at the party is 52 ounces.
c) To find the number of people in the party:
Number of people in the party is x=13.