If a company produces phones and earns $32 million in sales but pays $24 million for the items sold, then the company's gross profit margin would be ($32M - $24M) / $32M = 25 percent.
Some types of leg pain can be traced to problems in your lower spine. Leg pain can also be caused by blood clots, varicose veins or poor circulation. Some common causes of leg pain include: 1  Achilles tendinitis. 2  Achilles tendon rupture. 3  ACL injury. 4  Baker's cyst. 5  Bone cancer. 6  Broken leg. 7  Bursitis.
Answer Wiki. Pain in the legs can occur as a result of conditions that affect bones, joints, muscles, tendons, ligaments, blood vessels, nerves, or skin. Typically, the pain is a result of tissue inflammation that is caused by injury or disease. Either injury or chronic disease can cause inflammation to any of the tissues of the leg and lead to leg pain.