Question 902726
Convert the sentences to math symbols.
Ann is two years older than Barry.
{{{A=2+B}}}
Barry, who is five years younger than Cal
{{{B=C-5}}}
Cal is twice as old as Ann
{{{C=2A}}}
So now you have 3 equations with three unknowns, A, B, C.
Now substitute to reduce the number of variables.
Into eq. 1,
{{{A=2+C-5}}}
{{{A=C-3}}}
and from eq. 3,
{{{A=2A-3}}}
{{{-A=-3}}}
{{{A=3}}}
Now work backwards.
{{{C=2A}}}
{{{C=2(3)}}}
{{{C=6}}}
and finally,
{{{B=C-5}}}
{{{B=6-5}}}
{{{B=1}}}