The accounting ratio used to measure the average number of days for which suppliers remain unpaid is

The accounting ratio used to measure the average number of days for which suppliers remain unpaid is called "creditor's payment period". This ratio is used to assess how long a company takes to pay its suppliers. It is calculated by dividing the accounts payable by the total credit purchases and then multiplying the result by the number of days in the period being analyzed. The result gives an indication of how long a company takes to pay its creditors, with a higher number of days indicating a longer time taken to pay suppliers.