we know that
The speed is equal to the distance divided by the time
Let
x ------> the time in hours
In this problem
we have that
[tex]\frac{330}{x}\leq55[/tex]
Solve for x
[tex]\begin{gathered} 330\leq55x \\ \\ \\ \end{gathered}[/tex][tex]6\leq x[/tex]
Rewrite
[tex]x\ge6\text{ hours}[/tex]
The minimum number of hours is 6 hours
