Question 1048000
Let {{{ x }}} = calories in 2 cups of cereal
{{{ (2/3) / 243 = 2 / x }}}
Multiply both sides by {{{ 243x }}}
{{{ (2/3)*x = 2*243 }}}
{{{ 2x = 6*243 }}}
{{{ x = 3*243 }}}
{{{ x = 729 }}} calories