Question 1196818


The perimeter of a rectangle garden is {{{72}}} feet, so

{{{2(l+w)=72}}}

{{{l+w=72/2}}}

{{{l+w=36}}}...........eq.1


 if its length is {{{3}}} times the width, we have

{{{l=3w}}}.........eq.2


substitute {{{l}}} in eq.1


{{{3w+w=36}}}...........eq.1

{{{4w=36}}}

{{{w=9}}}


go to

{{{l=3w}}}.........eq.2, substitute {{{w}}}

{{{l=3*9}}}

{{{l=27}}}


answer: the length of the garden is {{{27}}} and width is {{{9}}}