Posted by Warren on Thursday, September 9, 2010 at 12:41am.
You are putting a stone borderof uniform width around a rectangular garden that measures 6 yards by 15 yards. You only have enough stone to cover 100 square yards. How wide should the border be? Solve using the 5 step process.

algebra  Reiny, Thursday, September 9, 2010 at 8:22am
Area of garden NOT covered with stone border
= (152x)(62x)
so
(15)(6)  (152x)(62x) = 100
solve this resulting equation for x