Answer:
10:30 am.
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.
![\text{Number of the pages left to print}=1500-420](https://img.qammunity.org/2020/formulas/mathematics/high-school/y1ooqvbsu94n800aa6ca12le5x9iojsudp.png)
![\text{Number of the pages left to print}=1080](https://img.qammunity.org/2020/formulas/mathematics/high-school/qin1nragucbtvfwu6ad2b2l7iccoaeag0y.png)
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.
![\text{Time it will take to print 1080 pages}=\frac{1080\text{pages}}{\frac{\text{12 pages}}{\text{minute}}}}](https://img.qammunity.org/2020/formulas/mathematics/high-school/skcytcdidjalghf8flkp3jco27t0ckxz30.png)
![\text{Time it will take to print 1080 pages}=\frac{1080\text{pages}}{12}* \frac{\text{minute}}{\text{page}}}](https://img.qammunity.org/2020/formulas/mathematics/high-school/1ue80fs4ozq0zin6d0hy62g3qoxm65vss4.png)
![\text{Time it will take to print 1080 pages}=90\text{ minutes}](https://img.qammunity.org/2020/formulas/mathematics/high-school/c3bf4i6icic0z2bp3yl2hvfra85fam3mcj.png)
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.