Question 1142748
They are saying that $210/month is 2.5% of her earnings ( monthly or yearly )
Let {{{ x }}} = Jan's monthly earnings
{{{ .025x = 210 }}}
{{{ x = 8400 }}}
Jan's yearly earnings is:
{{{ 12x = 100800 }}}
$8,400 is her monthly earnings
$100,800 is her yearly earnings
( note that you don't need to find out how 
much is put into the plan in one year )