Gloria worked for 6 hours a day for 2 days at the bank and earned $114.24. How much did she earn per hour?
2 answers:
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Let us assume that x kg of 30% salt solution is mixed with (200-x) kg of 40% salt solution in order to obtain 200 kg of 37% salt solution.
We can set up a linear equation in terms of x by setting amount of total salt before mixing and after mixing equal to each other.
Therefore, 60 kg of 30% salt solution should be mixed with 140 kg of 40% solution.