SOLUTION: A scientist mixes water (containing no salt) with a solution that contains 30% salt. She wants to obtain 150 ounces of a mixture that is 20% salt. How many ounces of water and how

Question 1149427: A scientist mixes water (containing no salt) with a solution that contains 30% salt. She wants to obtain 150 ounces of a mixture that is 20% salt. How many ounces of water and how many ounces of the 30% salt solution should she use?

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ounces of water needed
Let = ounces of 30% solution needed
--------------------------------------------------
(1)
(2)
-------------------------------
(2)
(2)
and
(1)
(1)
--------------------------
50 ounces of water is needed
100 ounces of 30% solution is needed
-------------------------------------------
check:
(2)
(2)
(2)
(2)
OK
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