$18-1.$ Using the specific identification method, calculate $($a$)$ the cosi of ending inventory and $($b$)$ the cost of goods

sold given the following: $,L\frac{U}{8}-j(2)$

From the following, calculate the $($a$)$ cost of ending inventory $($round the average unit cost to the nearest cent$)$

and $($b$)$ cost of goods sold using the weighted$-$average method, FIFO, and LIFO $($ending inventory shows

$61$ units$),L\frac{U}{8}-1(2)$

$18-2.$ Use weighted average:

$18-3.$ Use FIFO:

$18-4.$ Use LIFO:

Please show how you arrived to each answer foe each question. Thank you.