Since Charla completes 2/3 of the area in 1/2 hour, then 1/3 of the area will take 1/2 hour \* 3/2 = <<1/2*3/2=0.75>>0.75 hour.
So, the entire picture will take her 0.75 hour x 3 = <<0.75*3=2.25>>2.25 hours. Answer: \boxed{2.25}.
Charla wants to cover a certain rectangular area of her driveway with a picture using chalk. If she completes 2/3 of the area in 1/2 hour, how long will it take her to complete the entire picture?
1 answer