Question 638678
Let the minimum score she needs = {{{ x }}}
{{{ ( 85 + 88 + 87 + 80 + x ) / 5 = 82 }}}
Multiply both sides by {{{ 5 }}}
{{{ 85 + 88 + 87 + 80 + x = 410 }}}
{{{ 340 + x = 410 }}}
{{{ x = 70 }}}
She must score at least 70