Posted by G on Monday, February 4, 2008 at 11:26am.
The lenth of a room is 3 more thean twice the width of the room. The perimeter of the room is 66 feet. What are the dimensions of the room?
(Let x=the width fo the room.)
Book gives the following for the answer:
x + x =(3 + 2x) + (3 + 2x)=66
width=10, lenth=23
I am not clear how to set up the equation for this word problem and how to calculate it out?

Alebgra  msp, Monday, February 4, 2008 at 12:34pm
The first = sign should be +.
You can make x the width of the room.
The length will then be 2x+3, since it is 3 more than twice the width.
Now, just add up the four sides, which =66. Your equation will be
x + x +(2x + 3) + (2x + 3) = 66
Combine like terms and you have
6x + 6 = 66
To solve this equation, subtract 6 from both sides. You now have
6x = 60
Now, divide both sides by 6 to get x by itself
x = 10 (width) and (2x+3)=23 (length)
Answer This Question
Related Questions
 math  the lenght of a rectangular room is 6 feet longer than twice the width. ...
 algebra  the floor plan of a room has a scale of 2.5 in.:32ft. in the drawing,...
 Algebra  Lisa is cutting carpet for a rectangular room. The area of the room is...
 math  Alan built an additional room onto his house. the length of the room is 3...
 Math  For a math homework assignment, Karla found the area and perimeter of a ...
 math  A rectangular room is 5 meters longer than it is wide, and its perimeter ...
 math  A rectangular room is 5 meters longer than it is wide, and its perimeter ...
 maths  If the length of a rectangular room is 4 times its width,how is the room...
 Math help please  Gabriella wants to tile a room with an area of 320 square ...
 maths  A rectangular room is 2m longer than it is wide.if the width of the room...
More Related Questions