Answer:
The least number of people that can be in the marching band is 30
Step-by-step explanation:
Given that the high school marching band rehearses with either 6 or 10 members in every line.
the least number of people that can be in the marching band is the Lowest common multiple LCM of 6 and 10.
![\begin{gathered} 6=2*3 \\ 10=2*5 \\ \text{LCM}=2*3*5=30 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/zsldxsfpmbp0ogluuyxv4bfwgml4o4cyxj.png)
The least number of people that can be in the marching band is 30