New perimeter is 4040-2424= 1616 original, let x and y be length and width 2x + 2y = 4040 new 2x/2 +2y/3 = 1616 x +2y/3 = 1616 x = 1616 - 2y/3 sub this x value into first eq 2(1616-2y/3) + 2y = 4040 3232 - 4y/3 + 2 = 4040 put like terms together -4y/3+2y=4040-3232 2y/3=808 multiply both sides by 3 2y = 2424 divide both sides by 2 y=1212
sub this y value into any eq. i chose eq 1 2x+2(1212)= 4040 2x = 4040 - 2(1212) 2x = 1616 x = 808
