It is 13 hrs and 5 minutes.
The correct answer is 8800
Answer:
9 weeks
Step-by-step explanation:
50+ (30x9)=320
Answer:
Casey will take 3 minutes to clean
part of the section.
Step-by-step explanation:
∵ Casey takes the time to cleans
of a section = 1 minute
∴ He will take the time to clean complete section =
= 
= 3.6 minutes
Now time taken to clean
part of the section = 
= 3 minutes
Therefore, left part of the section will be cleaned by Casey in 3 minutes.