There are in one standard pound. This standard, known as the avoirdupois system, is used for everyday items like groceries, body weight, and shipping. However, a separate system exists for precious metals. 1. Identify the weighing system

12 ounces per pound. Used exclusively for gold, silver, and gemstones. 2. Compare the units

16 ounces per pound. Used for food, people, and general trade.

Converting pounds to ounces (video) - Khan Academy

There are two main systems currently used in the U.S. and UK:

While a standard pound is heavier than a troy pound, a is actually heavier than a standard (avoirdupois) ounce. Standard (Avoirdupois) Troy (Precious Metals) Ounces per Pound Weight of 1 Pound ~453.59 grams ~373.24 grams Weight of 1 Ounce ~28.35 grams ~31.10 grams 3. Apply the conversion