Periodic inventory ty Three Methods The units of animavailable for sale during the year were as follow lan 1 Trentory 6 units 548 Feb 17 Purchase July 21 Purchase 19 units Nov 23 Purchase units 553 There are units of them in the story at December nodic inventory . Det the inventory. By the tiroul method in the inventory cost by the method Dute the intrycot by the weighted cost med Rount average unit cout to the nearest cantant final aww to the whole dollar, if required