Question 1009864
The area of the plot is:
{{{ 22*30 = 660 }}} ft2
The area of the walkway + plot =
{{{ 660 + 224 = 884 }}} ft2
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Let {{{ w }}} = the width of the walkway
Adding this width to both sides of 
the length and width of the plot:
{{{ ( 22 + 2w )*( 30 + 2w ) = 884 }}}
{{{ 660 + 60w + 44w + 4w^2 = 884 }}}
{{{ 4w^2 + 104w - 224 = 0 }}}
{{{ w^2 + 26w - 56 = 0 }}}
I can see by looking at this:
{{{ ( w + 28 )*( w - 2 ) = 0 }}}
{{{ w }}} can't be negative, so
{{{ w = 2 }}} 
The width of the walkway is 2 ft
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check:
{{{ ( 22 + 2w )*( 30 + 2w ) = 884 }}}
{{{ ( 22 + 2*2 )*( 30 + 2*2 ) = 884 }}}
{{{ ( 22 + 4 )*( 30 + 4 ) = 884 }}}
{{{ 26*34 = 884 }}}
{{{ 884 = 884 }}}
OK