Answer:
The cost of a child ticket is $6.91 and an adult ticket is $11.32.
Explanation:
Given:
A family of 2 adults and 3 children go to the movies.
Adult tickets are $2.50 less than twice a children's ticket.
The total of the bill is $47.75.
Now, to find the costs of each ticket.
Let the cost of a child ticket be
![x.](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mmi228653dkvma4dszwy75q6dvkduzr4zg.png)
So, the cost of an adult ticket =
.
Family of 2 adults and 3 children go to the movies.
The total of the bill is $47.75.
Now, to get the costs of each ticket:
![2(x)+3(2x-2.50)=47.75](https://img.qammunity.org/2021/formulas/mathematics/middle-school/fm9smxq8g73qg6yaodbloh7ni5xaj556k2.png)
![2x+6x-7.50=47.75](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ql33b7vp06o4ztvp2nll6ompoir3evt6fp.png)
![8x-7.50=47.75](https://img.qammunity.org/2021/formulas/mathematics/middle-school/bm57ds4zp9lve5zf5m4gukp0xb82siez45.png)
Adding both sides by 7.50 we get:
![8x=55.25](https://img.qammunity.org/2021/formulas/mathematics/middle-school/5s4zrusp3wvi4lyumo6coozka2lvyei12e.png)
![x=6.91](https://img.qammunity.org/2021/formulas/mathematics/middle-school/bkvv361pizdw5f2vndretxkj580x4pb7gh.png)
The cost of child ticket = $6.91.
Now, to get the cost of adult ticket by substituting the value of
:
![2x-2.50\\=2(6.91)-2.50\\=13.82-2.50\\=11.32.](https://img.qammunity.org/2021/formulas/mathematics/middle-school/evw0mrd8q7sia8gjkozinr7zo1maso067p.png)
The cost of adult ticket = $11.32.
Therefore, the cost of a child ticket is $6.91 and an adult ticket is $11.32.