Question 1065603
Let {{{ n }}} = total number of bugs in collection
{{{ ( 5/9 )*n = ( 4/9 )*n + 4 }}}
{{{ ( 5/9 )*n - ( 4/9 )*n = 4 }}}
{{{ ( 1/9 )*n = 4 }}}
{{{ n = 36 }}}
There are 36 bugs in the collection
--------------------
check:
{{{ ( 5/9 )*n = ( 5/9 )*36 }}}
{{{ ( 5/9 )*n = 20 }}}
and
{{{ ( 4/9 )*n = ( 4/9 )*36 }}}
{{{ ( 4/9 )*n = 16 }}}
----------------------
{{{ 20 = 16 + 4 }}}
OK