Sierra Stone Ltd$.$ received an invoice dated September $11$ with terms $4/15,$ n$/30.$ The amount stated on the invoice was $$2544\mathrm{.}00.$

$($a$)$ What is the last day for taking the cash discount?

$($b$)$ What is the amount due if the invoice is paid on the last day for taking the discount?

This test: $22$ points$)$ possible

This question: $2$ points$)$ possil

Question $2$

$($a$)$ The last day to take the cash discount is

$($b$)$ The amount due is $

$($Round to the nearest cent$$as$$needed$.)$