<PRE><B>Question 1078664</B>
{{{ 9 - 3 = 6 }}}
He starts with 9 L of milk and removes
3 L, leaving 6 L of milk
------------------------------------
He adds 3 L of water, giving him 9 L
of mixture
------------------------------------
He takes out 3 L of the mixture, leaving
6 L of mixture which is still in the ratio
milk/water = {{{ 6/3 = 2/1 }}}
-------------------------------------
He pours in 3 L of water. The amounts of
milk and water he already has are:
4 L of milk
2 L of water
giving him the 2:1 ratio and adding up to 6 L
-----------------------------------------
Now he has
4 L of milk
5 L of water ({{{ 2 + 3 }}})
----------------------------
The ratio of milk to water is now 4 to 5
check the math&amp;
get another opinion if needed

</PRE>