Answer:
Casey will take 3 minutes to clean [tex]\frac{5}{6}[/tex] part of the section.
Step-by-step explanation:
∵ Casey takes the time to cleans [tex]\frac{5}{18}[/tex] of a section = 1 minute
∴ He will take the time to clean complete section = [tex]\frac{1}{\frac{5}{18} }[/tex]
= [tex]1\times \frac{18}{5}[/tex]
= 3.6 minutes
Now time taken to clean [tex]\frac{5}{6}[/tex] part of the section = [tex]\frac{5}{6}\times 3.6[/tex]
= 3 minutes
Therefore, left part of the section will be cleaned by Casey in 3 minutes.
