Question 897369
{{{(A+B+C)/3=91}}}
{{{A+B+C=3*91}}}
{{{A+B+C=273}}}
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{{{(D+E+F)/3=X}}}
{{{D+E+F=3X}}}
So then, the total average is,
{{{(A+B+C+D+E+F)/6=94}}}
{{{A+B+C+D+E+F=564}}}
Substituting,
{{{(273)+3X=564}}}
{{{3X=291}}}
{{{X=97}}}
You need to average a 97.