Question 389110
{{{A+B+C=271}}}
{{{B=2A}}}
{{{C=15+A}}}
Substituting,
{{{A+2A+15+A=271}}}
{{{4A=256}}}
{{{highlight(A=64)}}} ft.
{{{B=2(64)}}}
{{{highlight(B=128)}}} ft.
{{{C=15+64}}}
{{{highlight(C=79)}}} ft