Route Canal Shipping Company has the following schedule for aging of accounts receivable:

Age of Receivables April 30, 20X1
(1)	(2)	(3)		(4)
Month of Sales	Age of Account	Amounts		Percent of Amount Due
April	030	$	266,960	_______
March	3160		100,110	_______
February	6190		233,590	_______
January	91120		66,740	_______
Total receivables		$	667,400	100%

a. Calculate the percentage of amount due for each month.