Question 1768
let one length of the yard be x. The other is then (x+4), seeing as how it is 4 feet longer.

the perimeter is then just the addition of all 4 lengths and that adds up to 424, so:

{{{x + (x+4) + x + (x+4) = 424}}}
{{{4x + 8 = 424}}}
{{{4x = 416}}}
{{{x = 104}}}

So, the other length is 108.

Check... 104+108+104+108 is 424. Therefore, a correct answer :-)

cheers
Jon.