SOLUTION: How many liters of water should be added to a 30 liter mixture of milk And Water in the ratio of 7:3 so that the mixture has 40% water in it?
Please explain the answer. Thanks.
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Please explain the answer. Thanks.
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Question 475288: How many liters of water should be added to a 30 liter mixture of milk And Water in the ratio of 7:3 so that the mixture has 40% water in it?
Please explain the answer. Thanks. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = liters of water to be added to mixture
Let = liters of milk in 30 liter mixture
Let = liters of water in 30 liter mixture
given:
(1)
(2)
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Multiply both sides of (2) by
(2)
(2)
Substitute (2) into (1)
(1)
(1)
(1)
and
(1)
(1)
(1)
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In words:
(liters of water in final mixture) / (total liters of final mixture) = 40%
5 liters of water need to be added to the 30 liter mixture
