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Neurosurgeon

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Real-Life Math

Neurosurgeons operate for many different reasons, such as for brain aneurysms, brain tumors and head trauma. They also operate on people of a wide variety of ages.

To do this precise and demanding work, neurosurgeons need to use math. "We use calculus to do our work," says Dr. Sherry Apple, a neurosurgeon.

You are looking into brain abnormalities in a full-grown woman and in an infant. The brain of an adult is different than that of a baby. For example, a baby's brain isn't in the same proportion to its body as an adult's.

When a baby is born, its brain is about 1/10 of its body weight. If this is so, how many ounces does a 7-pound baby's brain weigh?

If an adult's brain is only 1/50 of her total weight, how much does the brain of a 150-pound woman weigh?

Remember:
16 ounces = 1 pound

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