pleas i need clear answer not i. exal or somthing like that

4. Beginning inventory, purchases, and sales for Product-Weld TM are as follows Beginning 24 units Sep. 1 $10 Inventory 17 units Sep. 5 Sale Sep. 17 10 Purchase $15 units Sep. 30 Sale 8 units Assuming a perpetual inventory system and the last-in, first-out method, determine (a) the cost of the merchandise sold for the September 30 sale and (b) the inventory on September 30