Tamarisk Windows manufactures and sells custom storm windows for three-season porches. Tamarisk 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. Tamarisk enters into the following contract on July 1, 2020. with a local homeowner. The customer purchases windows for a price of $2,370 and chooses Tamarisk to do the installation. Tamarisk charges the same price for the windows irrespective of whether it does the installation or not. The customer pays Tamarisk $2,050 (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, Tamarisk completes installation on October 15, 2020, and the customer pays the balance due (a) (b). Given uncertainty of finding skilled labor, Tamarisk is unable to develop a reliable estimate for the standalone selling price of the installation Prepare the journal entries for Tamarisk 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)