To solve for the cost per candle (x), we start by breaking down Kayla's total expenditure.
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Calculate the total cost of the candle holders:
- Cost per candle holder = $3.50
- Number of candle holders = 5
- Total cost of candle holders = 5 × $3.50 = $17.50
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Set up the equation for the total cost:
- Total cost for the candles = 5 × x
- Therefore, the total cost is the sum of the cost of candles and candle holders: \[ 5x + 17.50 = 27.50 \]
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Subtract the cost of the candle holders from the total: \[ 5x + 17.50 - 17.50 = 27.50 - 17.50 \] \[ 5x = 10.00 \]
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Solve for x: \[ x = \frac{10.00}{5} = 2.00 \]
Thus, the cost per candle is $2.00.
The answer is A. $2.00.