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

Answer 1

If Charla completes 2/3 of the area in 1/2 hour, it means she has 1/3 of the area left to complete.
Since 2/3 of the area was completed in 1/2 hour, it implies that 1/3 of the area will take 1/2 hour to complete.
Therefore, it will take Charla another 1/2 hour to complete the entire picture. Answer: \boxed{\frac{1}{2}\text{ hour}}.