Goodwill adjustment on partner admission Steps:

• Identify old profit-sharing ratio as 1:1 for X and Y; new ratio 1:1:1 with Z.
• Value partnership goodwill at $12,000 total for the firm.
• Credit goodwill to old partners' capitals in old ratio: $6,000 to X and$6,000 to Y.
• Debit Goodwill account $12,000; no direct debit to partners' capitals for goodwill unless written off in new ratio.

Not enough information: Capital balances and whether goodwill is raised/written off or premium paid by Z are needed to match choice numbers.

Final answer: Not enough information.