Bally Manufacturing sent Intel Corporation an invoice for machinery with a $13,800 list price. Bally dated the invoice August 08 with 1/10 EOM terms. Intel receives a 20% trade discount. Intel pays the invoice on August 21. On August 1, Intel Corporation returns $800 of the machinery due to defects. What does Intel pay Bally on August 21? Payable amount $ 10,240