To find the cost per candle, we first need to set up an equation based on the information given.
Let \( x \) be the cost of each candle.
Kayla bought 5 candles and 5 candle holders, so we can express the total cost as follows:
The total cost for the candles is: \[ 5x \]
The total cost for the candle holders is: \[ 5 \times 3.50 = 17.50 \]
Now, we can set up the equation for the total amount paid: \[ 5x + 17.50 = 27.50 \]
Next, we'll solve for \( x \): \[ 5x = 27.50 - 17.50 \] \[ 5x = 10.00 \] \[ x = \frac{10.00}{5} = 2.00 \]
So, the cost per candle is \( x = 2.00 \).
The answer is: A. $2.00.