Answer:
10:30 am.
Step-by-step explanation:
We have been given that Ursula uses a printer that can print 12 pages per minute.
Ursula started printing flyer for an order yesterday. Today at 8 am she continued working on the order, and by 9 a.m. she had 420 flyers for the order completed. The order was to print 1500 pages.
Let us find the number of pages left to print.
[tex]\text{Number of the pages left to print}=1500-420[/tex]
[tex]\text{Number of the pages left to print}=1080[/tex]
To find the time it will take to print 1080 pages we will divide number of pages left to print by number of pages printed per minute.
[tex]\text{Time it will take to print 1080 pages}=\frac{1080\text{pages}}{\frac{\text{12 pages}}{\text{minute}}}}[/tex]
[tex]\text{Time it will take to print 1080 pages}=\frac{1080\text{pages}}{12}\times \frac{\text{minute}}{\text{page}}}[/tex]
[tex]\text{Time it will take to print 1080 pages}=90\text{ minutes}[/tex]
90 minutes will be 1.5 hours , so 1.5 hours after 9 am will be 10:30 am. Therefore, the job was finished at 10:30 am.