Let the number be x:
So intepreting the word problem into words we will have:
[tex]2x-\frac{1}{3}x=55[/tex]Simplifying further, we will have:
[tex]\begin{gathered} \frac{5}{3}x=55 \\ \end{gathered}[/tex]Cross multiply:
[tex]\begin{gathered} 5x=165 \\ x=\frac{165}{5} \\ x=33 \\ \text{The number is 33} \end{gathered}[/tex]