To solve this question, follow the steps below:
Step 01: Find how much money Sara needs to save.
The amount of money she needs to save is the difference between $2,000 and $1,080.
[tex]\begin{gathered} 2000-1080 \\ 920 \end{gathered}[/tex]Sara needs to save $920.
Step 02: Find how many days Sara needs to save $920.
If she saves $40 per day, she will need:
[tex]\frac{920}{40}=23days[/tex]Answer: Sara will need 23 days to reach her goal.