Question 570736
At 5% interest $3500 earns {{{ .05*3500 = 175 }}}
$175 annually
Let {{{ n }}} = number of years it takes to double money
{{{ n*175 = 3500 }}}
{{{ n = 3500/175 }}}
{{{ n = 20 }}}
It will take 20 yrs to double the $3500