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Let the length of garden = x ft

therefore width of garden = (x/2)+2

Perimeter = 40 = 2*(Length +width)

or we can write ; 40 =2 *(x+x/2 +2)

or ; 20 =x + x/2 + 2

solving we get ; 3x/2 =18 (Equation)

x = 18*2/3 =12 ft (Length)

and width = x/2 + 2 = 8 ft

Answer : Length = 12 ft & Width = 8 ft

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