Answer:
27/16 chapters completed in 1.5 hours
Step-by-step explanation:
Jeff read 3/8 part in minutes = 20
He read complete chapter in minutes =[tex]\frac{20}{\frac{3}{8}}=\frac{20}{3} \times 8 = \frac{160}{3} minutes[/tex]
60 minutes = 1 hour
[tex]\frac{160}{3} minutes = \frac{160}{3} \times \frac{1}{60}=\frac{8}{9} hours[/tex]
So, No. of chapters completed in[tex]\frac{8}{9}[/tex] hours = 1
No. of chapters completed in 1.5 hours = [tex]\frac{1}{\frac{8}{9}} \times 1.5=\frac{27}{16}[/tex]
So, 27/16 chapters completed in 1.5 hours