Final answer:
The days' sales uncollected at the end of Year 1 was 35.15 days, while at the end of Year 2 it was 45.64 days.
Step-by-step explanation:
To calculate the days' sales uncollected at the end of each year, we need to divide the year-end balances of accounts receivable by the net sales and multiply by 365.
For Year 1: $64,000 / $660,000 * 365 = 35.15 days
For Year 2: $93,000 / $748,000 * 365 = 45.64 days
The days' sales uncollected worsened in Year 2 compared to Year 1, as the number of days increased from 35.15 to 45.64.