Question 207741
Let x = width of the rectangle
2x+4= length of the rectangle


2W + 2L = P
2(x) + 2(2x+4) = 38

2x + 4x +8 = 30
6x + 8= 38
6x=30
x=5  Width

2x+4 = Length
2*5+4 = Length
10+4 = 14 Length


Check:  2*5 + 2 * 14 = 10 + 28 = 38  Perimeter


For additional help with this type of problem, please see my own website by clicking on my tutor name anywhere in algebra.com.  Look for the link on my homepage "Basic, Intermediate, and College Algebra: One Step at a Time." Select "Basic Algebra", Chapter 1, and look for "Word Problems".  See also my page called "MATH IN LIVING COLOR", again, Basic Algebra, Chapter 1.  There I have a lot of problems like this solved in "Living Color".


R^2


Dr. Robert J. Rapalje
Seminole State College
Altamonte Springs Campus
Florida