Let us take x as the attendance before the drop.
The percentage of drop is 5%.
Thus, we have,
[tex]\begin{gathered} x-x\times\frac{5}{100}=1800 \\ x-0.05x=1800 \\ 0.95x=1800 \\ x=\frac{1800}{0.95}=1894.73 \end{gathered}[/tex]Thus, the attendance before the drop was 1894.73. or 1895.
