<PRE><B>Question 846797</B>
There are 20 sugar AND chocolate cookies
The ratio you are given says:
( chocolate ) / ( sugar ) = 2/3 
I can say:
( chocolate ) / ( chocolate + sugar ) = 2 / ( 2 + 3 )
Let {{{ c }}} = number of chocolate cookies
{{{ c / 20 = 2/5 }}}
Multiply both sides by {{{ 20 }}}
{{{ c = 8 }}}
She has 8 chocolate cookies
check:
There must be {{{ 20 - 8 = 12 }}} sugar cookies
{{{ 12/20 = 3/5 }}}
3/5 are sugar cookies
OK
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