Flounder Windows manufactures and sells custom storm windows for three-season porches. Flounder also provides installation service for the windows. The installation process does not involve changes in the windows, so this service can be performed by other vendors. Flounder enters into the following contract on July 1, 2020, with a local homeowner. The customer purchases windows for a price of $2,480 and chooses Flounder to do the installation. Flounder charges the same price for the windows irrespective of whether it does the installation or not. The customer pays Flounder $2,010 (which equals the standalone selling price of the windows, which have a cost of $1,140) upon delivery and the remaining balance upon installation of the windows. The windows are delivered on September 1, 2020, Flounder completes installation on October 15, 2020, and the customer pays the balance due. wwwru aprun Jul 1, 2020 No Entry 0 No Entry (To record contract entered into) Sep. 1, 2020 Cash 2010 Accounts Receivable 470 Unearned Service Revenue 4 Sales Revenue 19 (To record sales) Cost of Goods Sold 1140 Inventory 11 (To record cost of goods sold) Oct. 15, 2020 Cash 470 Unearned Service Revenue 488 Service Revenue Accounts Receivable (b) Given uncertainty of finding skilled labor, Flounder is unable to develop a reliable estimate for the standalone selling price of the installation. Prepare the journal entries for Flounder in 2020. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No entry" for the account titles and enter for the amounts.) Date Account Titles and Explanation Debit Credit (To record sales) (To record cost of goods sold) (To record payment received)