Question 897409
Let x to be the length while y to be width.
*[illustration 1.png]
{{{Perimeter=x+y+x+y}}}
{{{68=2x+2y}}}
{{{34=x+y}}}

From question,
{{{x=2y+1}}} ... Substitute into {{{34=x+y}}}
{{{34=(2y+1)+y}}}
{{{34=3y+1}}}
{{{33=3y}}}
{{{33/3=y}}}
{{{y=11}}}, where width, y = 11 ft.

To find length, x, substitute {{{y=11}}} into {{{34=x+y}}}.
{{{34=x+11}}}
{{{x=23}}}
Therefore, length of garden is 23 ft.