19. The following information is taken from the records of Fellows Services Ltd.

	2012	2011	2010
Accounts receivable	$100,700	$95,400	$89,640
Allowance for doubtful accounts	3,020	2,860	2,690
Sales revenue	1,037,210	1,097,100	1,120,500
Sales discounts	14,521	17,554	16,808

Instructions:

(a) Calculate the 2012 and 2011 accounts receivable turnover and collection period.

(b) Comment on any improvement or weakening in Fellows management of its receivables.