Abuilding in a city has a rectangular base. the length of the base measures 65 ft less than three times the width. the perimeter of this base is 870 ft. what are the dimensions of the base?

Call the length is x
the width is y

First equation:


Simplized the equation:


Second equation:

Simplized the equation:

from two equation we have:

Use Eliminate Method:



Conclude:
The length is 310 feets
The width is 125 feets

Dcups i think