Merchandise costing $$2,000$ is sold for $$3,000$ on terms $\frac{2}{30},\frac{n}{60}.$ The customer pays within the discount period. Prepare the journal entries needed at $($a$)$ time of sale and $($b$)$ collection of payment from the customer, assuming the company uses a perpetual inventory system with the gross method of recording sales discounts. $($If no entry is required for a transaction$/$event$,$ select $"$No Journal Entry Required" in the first account field.$)$

Answer is not complete.

$\backslash$table$[[$No$,$Transaction,,,Debit,Credit$],[1,a(1),$Accounts Receivable,$(,3,000,],[,$Sales Revenue,$(,,3,000],[,,,,],[2,a(2),$Cost of Goods Sold,$0,2,000vv,],[,$Inventory,$0,,2,000],[3,$b$,$Cash,$0,2,940,],[,$Sales Discounts,$,,60$