Final answer:
A yellow bruise is approximately 7 to 10 days old.
Step-by-step explanation:
A yellow bruise is approximately 7 to 10 days old.
When you get a bruise, it means that small blood vessels under your skin have broken, allowing blood to seep into the surrounding tissue. At first, the bruise may appear red or purple, but as it heals, it will turn yellow or green.
Based on the information provided, a yellow bruise is typically 7 to 10 days old, as it takes this amount of time for the body to break down and reabsorb the blood.