Question 872996
{{{ perimeter = 2*(length + width) }}}
from problem, {{{ length=(6*width) + 30)}}}
--->{{{1110=2*(length + width)}}}
--->{{{1110= 2*(6 * width) + 30 + width}}}
--->{{{525= 7 * width}}}
--->{{{width= 75}}}
therefore {{{length= (6 * 75) + 30 = 480}}}