$$

You have the following information for Concord Inc. for the month ended October $31,2027.$ Concord uses a periodic inventory system for inventory.

$\backslash$table$[[$Date$,$Description,Units,$\backslash$table$[[$Unit Cost or$],[$Selling Price$]]],[$Oct$.1,$Beginning inventory,$60,$$$26$

Calculate gross profit rate under each of the following methods.

$1.$ LIFO

$2.$ FIFO

$3.$ Avarage$-$cost$.$