a city council is planning to put a cement walkway around an existing swimming pool. the rectangular pool is 3 times as long as it is wide, and the walkway will be 5 feet wide on all sides. What is the length of the pool,I, in terms of the width,w?

Respuesta :

The length of the pool is 3 times the width:
  l = 3w
I=3w is the answer.. hope I helped