SOLUTION: A chemist needs 150 milliliters of a 65% solution but has only 32% and 77% solutions available. Find how many milliliters of the 77% solution you need to get the desired solution.

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Question 279092: A chemist needs 150 milliliters of a 65% solution but has only 32% and 77% solutions available. Find how many milliliters of the 77% solution you need to get the desired solution.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A chemist needs 150 milliliters of a 65% solution but has only 32% and 77% solutions available. Find how many milliliters of the 77% solution you need to get the desired solution.
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Equation:
active + active = active
0.32x + 0.77(150-x) = 0.65*150
Multiply thru by 100
32x + 77*150 - 77x = 65*150
-45x = -12*150
x = 40 ml (amt. of 32% solution needed in the mixture)
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150-x = 110 ml (amt. of 77% solution needed in the mixture)
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Cheers,
Stan H.