On a fluid-restriction diet, a patient takes 120 mL of water with daily medications. How many ounces is that?

On a fluid-restriction diet, a patient takes 120 mL of water with daily medications. How many ounces is that?

• A. 2 oz
• B. 3 oz
• C. 4 oz
• D. 5 oz

Answer: (C)

Converting milliliters to ounces is the key idea. In practice, 1 fluid ounce is about 30 mL. So, to find the ounces in 120 mL, divide: 120 ÷ 30 = 4. That means 120 mL is 4 fluid ounces. Using the exact conversion 1 oz ≈ 29.57 mL also gives about 4.07 oz, which rounds to 4 oz for this purpose. The other options correspond to 60 mL (2 oz), 90 mL (3 oz), and 150 mL (5 oz), which aren’t equal to 120 mL.

Converting milliliters to ounces is the key idea. In practice, 1 fluid ounce is about 30 mL. So, to find the ounces in 120 mL, divide: 120 ÷ 30 = 4. That means 120 mL is 4 fluid ounces. Using the exact conversion 1 oz ≈ 29.57 mL also gives about 4.07 oz, which rounds to 4 oz for this purpose. The other options correspond to 60 mL (2 oz), 90 mL (3 oz), and 150 mL (5 oz), which aren’t equal to 120 mL.