Answer:
Debit the Cost of Sales and,
Credit the Revenue.
Step-by-step explanation:
Transactions that occur within a group of companies must be eliminated. Playa is a Parent (85%) and Seashore Inc is a Subsidiary.
The effect of the Sale by Playa to Seashore is that Group Cost of Sales and Revenue would be over-valued by the price of intragroup sale.
Thus, the adjustment for this intragroup sale, is to Debit the Cost of Sales and Credit the Revenue.