Note: Two questions are related to the following same information

Zaid is an engineer and keeps his records on cash basis. During 2020 Zaid collected $75,500 from his customers, and paid in expenses of $52,000. Additional information was as follows:

	31/12/2019	31/12/2020
Accounts receivable	$18,000	$51,000
Unearned service revenue	12,000	21,000
Acc. Depreciation	10,000	11,000

Additional information related to the year 2020 is:

- Accounts receivables of $500, were written off.

- Equipment with a cost of $10,000, 70% depreciated was sold for $900.

Instructions:

A) Revenues are: $

B) Expenses are: $