Answer:
$21.53
Explanation:
Take 12.50 and multiply it by 5%, it equals 0.625. That number represents how much the tax costs, so add it to 12.50, it equals 13.125.
You then have to add the ring.
Take 8 and multiply it by 5%, it equals 0.4. That is the tax, so add it to 8, it equals 8.4.
Add them together, 21.525
Then round to the nearest hundredth.
$21.53 is the final answer.