SOLUTION: James has avalible a 10% alcohal solution and a 60% solution. Find how many liters of each solution should be mixed to make 50 liters of 40% solution.

Question 490730: James has avalible a 10% alcohal solution and a 60% solution. Find how many liters of each solution should be mixed to make 50 liters of 40% solution.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = liters of 10% solution needed
Let = liters of 60% solution needed
given:
(1)
(2)
------------------------
(2)
(2)
Subtract (1) from (2)
(2)
(1)

and, since
(1)
(1)
(1)
20 liters of 10% solution and 30
liters of 60% solution are needed
check:
(2)
(2)
(2)
(2)
(2)
OK
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