Mercury Company has only one inventory pool. On December $31,2024,$ Mercury adopted the dollar$-$value LIFO inventory method. The inventory on that date using the dollar$-$value LIFO method was $$200,000.$ Inventory data are as follows:

$\backslash$table$[[,\backslash$table$[[$Ending Inventory at$],[$Year$-$End Costs$]],\backslash$table$[[$Ending Inventory at$],[$Base Year Costs$]]],[2025,$$$231,000,$$$220,000$