SOLUTION: how many liters of water should be added to 5L of a 60% salt solution to produce a solution that is no less than 30% salt and no more than 40% salt?

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Question 782609: how many liters of water should be added to 5L of a 60% salt solution to produce a solution that is no less than 30% salt and no more than 40% salt?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
v = liters of water to add.
5%2A60%2F%28v%2B5%29=30 and 5%2A60%2F%28v%2B5%29=40
Find v for both equations and those are the ranges for v.

The question description is wrong. Salt in water is less than 24%.
Also, this question would need to account for densities.