According to the formula in the text, a 192 lb. person needs how many 8 oz glasses of water per day for maximum physical health?

• A. Eight
• B. Ten
• C. Twelve
• D. Sixteen

Answer: (C)

Water needs are often estimated from body weight using a simple rule: half an ounce of water per pound of body weight. For a person weighing 192 pounds, that’s 192 × 0.5 = 96 ounces per day. Since a glass is 8 ounces, 96 ounces equals 12 eight-ounce glasses. So the recommended amount, per this formula, is twelve glasses. If you compare the other options, eight glasses would be 64 ounces, ten would be 80 ounces, and sixteen would be 128 ounces—each off from the 96-ounce target.