Given: Elsa ate lunch in 7 minutes.
Required: To determine in how many seconds Elsa ate lunch.
Explanation: Since in 1 minute there are 60 seconds.
Hence to convert 7 minutes into seconds we need to multiply by 60 as follows
![\begin{gathered} 7\text{ minutes}=7*60\text{ seconds} \\ =420\text{ seconds} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/t94ejdlaufbo0rdv0uyceiqmgxcqlv3k34.png)
Final Answer: Elsa ate lunch in 420 seconds.