We have been given that Regan sold 14 necklace and made a total of $210. Each necklace cost the same amount. We are asked to find the cost of one necklace.
To find the cost of one necklace, we will divide total cost by total number of necklaces as:
[tex]\text{Cost of one necklace}=\frac{\text{Total cost}}{\text{Total necklaces}}[/tex]
[tex]\text{Cost of one necklace}=\frac{\$210}{14}[/tex]
[tex]\text{Cost of one necklace}=\$15[/tex]
Therefore, the cost of one necklace is $15.
