Take an existing batch specification and recalculate the required gold and alloy masses after changing either the total batch weight, target karat, or both.
This isolates the material change required by the revised specification.
It can help when production quantity changes, a karat specification is corrected, or an existing job must be scaled without rebuilding the arithmetic from scratch.
Yes. The gold adjustment shows the combined effect.
No. It recalculates total gold versus total alloy. Component-level ratios must be handled separately.