Question

Ned’s Sheds purchases building materials from Timbertown Lumber for $3,700 with terms of 4/15, n/30. The invoice is dated October 17. Ned’s decides to send in a $2,000 partial payment. By what date must the partial payment be sent to take advantage of the cash discount?

Answer 1

is this compound interest, annuity, or something else?

Answer 2

It don't say

Answer 3

"4/15", in this context, means a 4% discount is offered for payments made within 15 days.