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.
Pain in the legs can be due to a skin problem, such as dryness and eczema, which is common in older people, or to a sluggish circulation. Arthritis in either the knee or hip joints, or even in the spine (which can put pressure on the nerves supplying the legs) could also be to blame. Alternatively, the burning could be a side effect of medication, such as drugs used to treat a heart condition or high blood pressure. So she really needs to seee her GP to get this sorted out. Sometimes a burning sensation is accompanied by jerky movements in the legs, especially at night. Known as 'Restless Leg Syndrome' this can be linked to iron deficiency and also diabetes, though in most sufferers there is no identifiable underlying cause.