Question 706038
Let {{{ x }}} = the dollar amount of the tax
{{{ 7.85 + x = 8.3 }}}
{{{ x = 8.3 - 7.85 }}}
{{{ x = .45 }}}
{{{ .45/ 7.85 = .0573 }}}
{{{ .0573*100 = 5.73 }}}
The tax is 5.73%