Answer:
$3.10
Step-by-step explanation:
• For each visit ,(except 7),, he paid for both popcorn and the movie.
,
• He has a total of 39 receipts.
Therefore, the number of popcorns that he bought will be:
![\begin{gathered} Number\; of\; popcorns=(39-7)/(2)=(32)/(2)=16\text{ popcorns} \\ \implies Number\; of\; movies=39-16=23\text{ movies} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/c2ddxsmwvh4qd49n2o9extsgn1cb7b3zla.png)
Since the movie tickets were $12.00 each, the amount spent on movies will be:
![Movie\; Expense=23*\$12=\$276](https://img.qammunity.org/2023/formulas/mathematics/college/yd2ge1at88vca9qq9hqz1zm7iv101cwso0.png)
We then use this to determine the amount spent on popcorns.
![\begin{gathered} \text{Amount spent on popcorn}=Total-\text{Amount spent on movies} \\ =325.60-276 \\ =\$49.60 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/cm6xlvl3uak1zaxhn2mlzjiwwfhk2tv9ot.png)
Recall that we earlier stated that Mario bought 16 bags of popcorn.
Therefore, the cost of a bag of popcorn will be:
![(49.60)/(16)=\$3.10](https://img.qammunity.org/2023/formulas/mathematics/college/mv204lrpyuv2uq9uzl4u7mpqq0v4u0psbm.png)
Each bag of popcorn costs $3.10.Each bag of popcorn costs