Question 210201
Start with {{{P = 2(L+W)}}}, {{{P = 70}}} L = length and W = width.
1) Length-to-width ratio.3 to 4.
{{{70 = 2(3x+4x)}}}
{{{70 = 2(7x)}}} Divide both sides by 2.
{{{35 = 7x}}} Divide both sides by 7.
{{{5 = x}}} then...
{{{L = 3x}}}
{{{highlight(L = 15)}}}feet.
{{{W = 4x}}}
{{{highlight(W = 20)}}}feet.
Try this on the other two problems.