<prompt> The American Dental Association ADA Specification No. 5 for Dental Casting Gold Alloys specifies :Minimum total gold-plus-platinum-metals -75 wtMinimum total gold-plus-platinum-metals -25 wtMinimum total gold-plus-platinum-metals -55 wtMinimum total gold-plus-platinum-metals 75 wt  <response>: The American Dental Association ADA Specification No.5 for Dental Casting Gold Alloys requires a minimum total gold-plus-platinum-metals content of 75 weight percent wt. Sturdevant operative dentistry 7th Edition, Page No:e94 