Answer:
[tex]20\frac{4}{5}[/tex] hours
Step-by-step explanation:
If 1 wall takes [tex]2\frac{3}{5}[/tex] hours to paint,
8 walls would take [tex]2\frac{3}{5}*8[/tex] hours to paint [given same rate].
Changing [tex]2\frac{3}{5}[/tex] into improper fraction [for ease of multiplying]:
[tex]2\frac{3}{5}=\frac{13}{5}[/tex]
Now multiplying [tex]\frac{13}{5}[/tex] with 8 gives us:
[tex]\frac{13}{5}*8=\frac{104}{5}[/tex] hours
In decimal it is [tex]\frac{104}{5}=20.8[/tex] hours
