sorry I posted this question before. I have been ill.I still need help. word problem
Upright posts are to be placed at 9 inch intervals on 3 sides of a deck which measures a total of 36 feet. How many upright post will will be needed?
36/3=12, if i divide 12 by 9 it will not give me enough post, so i need to change feet to inches???
of course!
you must have the same units
12/9 would be a meaningless calculation.
36 ft ÷ (9/12) ft = 48
Now, the question is not clear about posts at the end.
e.g. If the fence has one side along a house, would you need a post right against the house at each end?
If so there would be 49 posts,
if not, there would be 47 posts.
Yes, you have correctly identified that you need to convert the measurement from feet to inches. To do this, you will multiply the length of the deck in feet by 12 to convert it to inches.
So, 36 feet x 12 inches/foot = 432 inches.
Now that you have the length of the deck in inches, you can divide it by the interval between the upright posts.
432 inches ÷ 9 inches/post = 48 posts.
Therefore, you will need a total of 48 upright posts for the 3 sides of the deck.
Yes, you are correct. Since the intervals between the upright posts are given in inches, we need to convert the length of the deck from feet to inches.
To convert feet to inches, you need to know that there are 12 inches in one foot. So, multiplying the length of the deck in feet by 12 will give you the length in inches.
In this case, the deck is 36 feet long, so to convert it to inches, multiply 36 by 12:
36 feet * 12 inches/foot = 432 inches
Now that we know the length of the deck in inches, we can determine the number of upright posts needed.
Since the upright posts need to be placed at 9-inch intervals, we divide the length of the deck in inches by the interval:
432 inches / 9 inches = 48 posts
Therefore, you will need a total of 48 upright posts to be placed at 9-inch intervals on 3 sides of the deck.