Question

2) The population my nyc 2012 was

8 million. In 2021 The Census indicated
8% of the people left the city, What’s
the now population ?

Answer 1

`\begin{array}ll \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{8\% of 8000000}}{\left( \cfrac{8}{100} \right)8000000}\implies 640000~\hfill \underset{now}{\stackrel{8000000-640000}{7360000}}`