The following data represent the beginning inventory and, in order of occurrence, the purchases and sales of La Fleur, Inc. for an operating period.

$\backslash$table$[[,$Units,$\backslash$table$[[$Unit$],[$Cost$]],\backslash$table$[[$Total$],[$Cost$]],\backslash$table$[[$Units$],[$Sold$]]],[$Beginning Inventory,$30,$$$28,$$$840,],[$Sale No$.1,,,,20],[$Purchase No$.1,50,40,2,000,],[$Sale No$.2,,,,40],[$Purchase No$.2,{20}_{?},44,880,-],[$Totals$,{200}_{{?}_{?}},,$$$3,{720}_{?},{60}_{{?}_{?}}$