Answer :
[tex]Making\ proportion:\\\\
4,5\ pages\ \ -\ \ \ 1\ minute\\
90\ pages\ \ -\ \ x\ minutes\\\\
Cross\ multiplication:\\
x*4,5=90*1\\
4,5x=90\ \ \ |Divide\ by\ 4,5\\
x=20\ minutes\\\\
\textbf{It\ will\ take\ 20\ minutes\ to\ read\ 90\ pages.}
[/tex]
Answer:
20 minutes
Step-by-step explanation:
Divide 90 by 4.5 to get 20.
PLEASE MARK BRAINLIEST