Question 560092
Let grade on next exam = {{{x}}}
given:
{{{ ( 80 + 93 + 91 + x ) / 4 = 90 }}}
{{{ 80 + 93 + 91 + x = 360 }}}
{{{ 264 + x = 360 }}}
{{{ x = 360 - 264 }}}
{{{ x = 96 }}}
A 96 is needed to average 90 for the 4 exams