What percentage of pure gold is present in an 18-carat gold alloy?
Explanation
The carat system measures the purity of gold, where 24 carats represent pure gold (100%). Therefore, 18 carats correspond to 18/24, which equals 75% gold content.
The carat system measures the purity of gold, where 24 carats represent pure gold (100%). Therefore, 18 carats correspond to 18/24, which equals 75% gold content.