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.

Answer 1

Area of garden NOT covered with stone border
= (15-2x)(6-2x)

so
(15)(6) - (15-2x)(6-2x) = 100

solve this resulting equation for x