Question 1054035
{{{A=2B}}}
{{{C=3B-3.5}}}
{{{A+B+C=47.5}}}
Substituting,
{{{2B+B+3B-3.5=47.5}}}
{{{6B=51}}}
{{{B=51/6}}}
{{{B=17/2}}}{{{km}}}
So then,
{{{A=2(17/2)}}}
{{{A=17}}}{{{km}}}
and
{{{C=3(17/2)-3.5}}}
{{{C=51/2-7/2}}}
{{{C=44/2}}}
{{{C=22}}}{{{km}}}