Answer:
It take 5 hours to prepare 900 bags of samples if Ashley and 5 of her friends do the work.
Step-by-step explanation:
1 person prepare 1 bag in 2 minutes
We are supposed to find How many hours will it take to prepare 900 bags of samples if Ashley and 5 of her friends do the work?
No. of persons = 6
Since 1 person 2 minutes to prepare 1 bag.
So, 6 persons prepare 6 bags in 2 minutes
6 persons prepare 1 bags in minutes =
6 persons prepare 900 bags in minutes =
= 300 minutes
Now, 60 minute = 1 hour
So, 300 minutes = 
= 5 hours
Hence it take 5 hours to prepare 900 bags of samples if Ashley and 5 of her friends do the work.