Carla wants to cover certain rectangular area of her driveway with a picture using chalk if she completes 2/3 of the area and a half an hour how long will it take to complete the entire picture

Answer 1

If Carla completes 2/3 of the area in half an hour, it means that she covers 1/3 of the area in half an hour.
To complete the entire picture, which is the remaining 2/3 of the area, it will take Carla 2/3 x 1.5 hours = <<2/3*1.5=1>>1 hour. Answer: \boxed{1}.