SOLUTION: how much 2% alcohol must be mixed with 18% alcohol to get 4,000 ml of 3% alcohol?
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Question 559528: how much 2% alcohol must be mixed with 18% alcohol to get 4,000 ml of 3% alcohol?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ml of 2% alcohol needed
Let = ml of 18% alcohol needed
given:
= ml of alcohol in 3% solution
(1) ml
(2) ml
--------------------
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
and
(1)
(1)
(1)
(1)
3,750 ml of 2% alcohol and 250 ml of
18% alcohol are needed
---------
check answer:
(2)
(2)
(2)
(2)
OK
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