Given that the buffet is to have 19 desserts for every 16 people.
Let's find the number of desserts they should have if they plan for 320 people.
19 desserts = 16 people
x desserts = 320 people
Therefore, we have:
![\begin{gathered} (19)/(16)=(x)/(320) \\ \\ \text{Cross multiply:} \\ \\ 16x\text{ = 320 }\ast\text{ 19} \\ \\ 16x\text{ = }6080 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/nx3p4hmeucywiz4i98amn5foa0e7xjimpy.png)
Divide both sides by 16:
![\begin{gathered} (16x)/(16)=(6080)/(16) \\ \\ x\text{ = }380 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/z1z582clg700577uiq569pyv256f5ao3jp.png)
Thereore, they should have 380 desserts if they plan for 320 people.
ANSWER:
380 desserts