Answer:
We start by calculating the discount amount for the extra 60% off with code SALE:
$29.99 * 60% = $17.99
Then we calculate the new price of the jeans after applying the discount:
$29.99 - $17.99 = $12
Next, we calculate the sales tax of 10.25% for the discounted price:
$12 * 10.25% = $1.23
Finally, we add the sales tax to the discounted price to find the final price:
$12 + $1.23 = $13.23
So the total cost of the jeans, with the extra 60% off code and sales tax of 10.25% included, would be $13.23.