To find the unit rate (price per yard) of the fabric Mrs. Billings bought, you can follow these steps:
1. Calculate the cost per yard: Divide the total cost ($62.50) by the number of yards (12).
$62.50 ÷ 12 = $5.21 per yard
2. Therefore, the unit rate (price per yard) of the fabric is $5.21.
So, Mrs. Billings paid $5.21 per yard for the fabric she bought to make curtains.