Problema Solution
A man built a walk of uniform width around a rectangular pool. If the area of the walk is 115 square feet and the dimensions of the pool are 7 feet by 11 feet, how wide is the walk?
Answer provided by our tutors
let 'w' represent the width of the walk
area = length * width
115 = (7+w)(11+w)
solving for 'w' we have a positive value of w=1.908
the width of the walk is approximately 1.9 feet