Charla wants to cover a certain rectangular area of her driveway with a picture using chalk if she complete 2/3 of the area in 1/2 hour how long will it take her to complete the entire picture?

Answer 1

If Charla is able to complete 2/3 of the area in 1/2 hour, it means she completes 1/3 of the area in 1/2 hour as 1 - 2/3 = 1/3.
If 1/3 of the area is completed in 1/2 hour, then it will take 1 additional 1/2 hour to complete the entire picture.
Therefore, it will take Charla a total of 1/2 hour + 1/2 hour = <<1/2+1/2=1>>1 hour to complete the entire picture. Answer: \boxed{1}.