Examine the following extracts from Blake Co.'s income statement and balance sheet for the previous three years.

Income Statement	Year 1	Year 2	Year 3
	$	$	$
Sales	6,000	9,000	12,000
Operating Income	1,500	1,800	2,400

Balance Sheet	Year 1	Year 2	Year 3
	$	$	$
Accounts receivable	1,200	1,800	2,400

You also read in the financial press that Blake Co. sold $2,000 of its accounts receivable in year 3.

Required: PLEASE ANSWER THESE QUESTIONS

a). Calculate the ratio of accounts receivable as a percentage of sales for years 1,2, and 3 without taking into account what you read about the sale of Blakes's accounts receivable.

b). Calculate the ratio of accounts receivable as a percentage of sales for years 1, 2, and 3 after adjusting for the sale of Blake's accounts receivable.