In what ratio P:Q should the Mixture P of milk and water in the ratio of 2:1 be mixed with another Mixture Q of milk and water in the ratio 1:5 so that the resultant mixture contains equal quantities of milk and water?
Choices:
A) 3:2	B) 2:1	C) 4:3	D) 3:5	E) 3:1
(2/3)*P +(1/6)*Q = (1/3)*P+(5/6)*Q   2P=4Q   P/Q = 2/1   The answer is 2:1.
<result>B</result>
In what ratio P:Q should the Mixture P of milk and water in the ratio of 2:1 be mixed with another Mixture Q of milk and water in the ratio 1:5 so that the resultant mixture contains equal quantities of milk and water?