Question 1032136
Let {{{ g }}} = number of green beads
{{{ 2/5 = 6 / ( 6 + g ) }}}
{{{ 2*( 6 + g ) = 6*5 }}}
{{{ 12 + 2g = 30 }}}
{{{ 2g = 18 }}}
{{{ g = 9 }}}
There are 9 green beads
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check:
{{{ 2/5 = 6 / ( 6 + g ) }}}
{{{ 2/5 = 6 / ( 6 + 9 ) }}}
{{{ 2/5 = 6/15 }}}
{{{ 2/5 = 2/5 }}}
OK