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
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}.
To find out how long it will take Carla to complete the entire picture, we need to determine the additional time required to complete the remaining 1/3 of the area.
Let's assume it took Carla half an hour to complete 2/3 of the area. This means she completed 2/3 in 30 minutes.
To find out how long she will take to complete 1/3 of the area, we can set up a proportion:
(2/3 area) : (30 minutes) = (1/3 area) : (x minutes)
Cross multiplying, we get:
(2/3) * x = (1/3) * 30
Simplifying this equation:
2x/3 = 30/3
Multiplying both sides by 3 to isolate x:
2x = 30
Now, divide both sides by 2:
x = 15
Therefore, Carla will take an additional 15 minutes to complete the remaining 1/3 of the area. So, it will take Carla a total of 30 minutes (2/3 area) + 15 minutes (1/3 area) = 45 minutes to complete the entire picture.
To find out how long it will take Carla to complete the entire picture, we first need to determine the time it takes for her to complete 2/3 of the area.
Let's assume Carla takes 30 minutes to complete 2/3 of the area. This means that 1/3 of the area remains unfinished.
Since 2/3 is equal to 30 minutes, we can calculate the time it takes to complete 1/3 of the area by dividing the 30 minutes by 2 and multiplying by 1, which gives us (30 / 2) * 1 = 15 minutes.
Therefore, if Carla takes 30 minutes to complete 2/3 of the area, it will take her an additional 15 minutes to complete the remaining 1/3 of the area. Thus, it will take her a total of 30 + 15 = 45 minutes to complete the entire picture.