The east of the river cover 2/3 of the city
The North of the main street is 3/5 of the city.
we are to find the fraction of the shaded area.
The total number of boxes is 15, and the shaded number of boxes is 6
[tex]\begin{gathered} \text{the area is }\frac{6}{15} \\ \frac{2}{5} \end{gathered}[/tex]