Sales discounts is classified as a(n): revenue account expense account contra asset account liability account contra revenue account none of the above choices are correct The number of days sales in inventory measures: the number of days that elapse between buying inventory from suppliers and collecting cash from our customers due to selling them inventory the number of times a company is able to collect its accounts receivable during the year the number of days that elapse between making sales to customers on account and collecting cash from our customers due to selling them inventory the number of time; a company is able to sell its inventory to credit customers during the year the number of days that elapse between buying inventory from suppliers and making sales to customers on account