Question 1043625
{{{ ( .86 + .84 + .76 + .72 + x ) / 5 = .81 }}}
{{{ .86 + .84 + .76 + .72 + x = 4.05 }}}
{{{ 3.18 + x = 4.05 }}}
{{{ x = .87 }}}
The student needs 87% on the 5th quiz