The following events occur for The Underwood Corporation during 2018 and 2019, its first two years of operations.

June 12, 2018 Provide services to customers on account for $36,200.

September 17, 2018 Receive $21,000 from customers on account.

December 31, 2018 Estimate that 45% of accounts receivable at the end of the year will not be received.

March 4, 2019 Provide services to customers on account for $51,200.

May 20, 2019 Receive $10,000 from customers for services provided in 2018.

July 2, 2019 Write off the remaining amounts owed from services provided in 2018.

October 19, 2019 Receive $41,000 from customers for services provided in 2019.

December 31, 2019 Estimate that 45% of accounts receivable at the end of the year will not be received.