Kayla purchased 5 large sodas at the movie theater. Before tax was added, the total cost of the 5 sodas was equal to the coast of 3 sodas plus $7. What was the cost of one soda, s?
Let x be the cost of one soda.
The total cost of 5 sodas is 5x.
The total cost of 3 sodas plus $7 is 3x + $7.
The cost of 5 sodas equals the cost of 3 sodas plus $7:
5x = 3x + $7.
Subtract 3x from both sides of the equation:
2x = $7.
Divide both sides of the equation by 2:
x = $7 / 2.
The cost of one soda is $3.5. Answer: \boxed{3.5}.
Let's set up an equation using the given information.
Let s be the cost of one soda.
According to the problem, the total cost of 5 sodas before tax is equal to the cost of 3 sodas plus $7. We can write this as:
5s = 3s + 7
To solve this equation for s, we need to isolate the variable s. We can do this by subtracting 3s from both sides of the equation:
5s - 3s = 7
Combining like terms:
2s = 7
Finally, divide both sides of the equation by 2 to solve for s:
s = 7/2
Therefore, the cost of one soda is $3.50.
To find the cost of one soda, we need to set up and solve an equation using the given information.
Let's assume the cost of one soda is 's' dollars.
According to the given information, the total cost of the 5 sodas before tax is equal to the cost of 3 sodas plus $7.
So we can set up the equation as:
5s = 3s + 7
Now, we can solve this equation to find the value of 's'.
By subtracting 3s from both sides of the equation, we get:
5s - 3s = 3s + 7 - 3s
This simplifies to:
2s = 7
Finally, dividing both sides of the equation by 2, we can find the value of 's':
s = 7/2
So the cost of one soda is $3.50.