Answer:
The cost of one drink is $2.5 and the cost of one bag of popcorn is $8.25
Step-by-step explanation:
Consider the provided information.
Let price of one drink is x and the price of one bag of popcorn is y.
Adam spends a total of $62.75 on 2 drinks and 7 bags of popcorn.
![2x+7y=62.75](https://tex.z-dn.net/?f=2x%2B7y%3D62.75)
......(1)
Ian spends a total of $43.00 on 4 drinks and 4 bags of popcorn.
![4x+4y=43.00](https://tex.z-dn.net/?f=4x%2B4y%3D43.00)
Now use substitute the value of 2x in above equation.
![2(62.75-7y)+4y=43.00](https://tex.z-dn.net/?f=2%2862.75-7y%29%2B4y%3D43.00)
![125.5-14y+4y=43.00](https://tex.z-dn.net/?f=125.5-14y%2B4y%3D43.00)
![-10y=43.00-125.5](https://tex.z-dn.net/?f=-10y%3D43.00-125.5)
![10y=82.5](https://tex.z-dn.net/?f=10y%3D82.5)
![y=8.25](https://tex.z-dn.net/?f=y%3D8.25)
Hence the value of y is $8.25
Now find the value of x as shown:
![2x=62.75-7(8.25)](https://tex.z-dn.net/?f=2x%3D62.75-7%288.25%29)
![2x=5](https://tex.z-dn.net/?f=2x%3D5)
![x=2.5](https://tex.z-dn.net/?f=x%3D2.5)
Hence, the cost of one drink is $2.5 and the cost of one bag of popcorn is $8.25