Find the cost ratio for the inventory table shown below.

$\backslash$table$[[$Find the cost ratio for,$\backslash$table$[[$Units$],[$Ue inventory$]],$Cost per,,Retail price,Total retail$],[\backslash$table$[[$Date of purchase$],[$Beginning inventory$]],$purchased,unit,Total cost,per unit,$\backslash$table$[[$value$],[$$$1\mathrm{.}728$