Interim accounting under LIFO

Tap Manufacturing Company records sales of $1,000,000 and cost of sales of $550,000 during the first quarter of 2011. Tap uses the LIFO inventory method, and its inventories are computed as follows:

Beginning LIFO inventory at January 1

10,000 units at $5

$50,000

Ending LIFO inventory at March 31

6,000 units at $5

$30,000

Before year end, Tap expects to replace the 4,000 units liquidated in the first quarter. The current cost of the inventory units is $7each.

REQUIRED: At what amount will Tap report cost of sales in its first quarter interim report?