Question

4. A rectangular garden plot 16 m by 24 m is to be bordered by a uniform width. If the area is doubled,
find the width of the border.​

Answer 1

current area = 16(24) m^2 = 384 m^2

new plot is 16+2x by 24+2x

new area = (16+2x)(24+2x) = 2(384)

expand, simplify to a quadratic equation.

Solve this quadratic using the method you learned.

hint: it factors and has a nice integer solution