Question 1185163
A scientist has two solutions, which she has labeled Solution A ad Solution B. Each contains salt. She knows that Solution A is 60% salt and Solution B is 90% salt. She wants to obtain 90 ounces of a mixture that is 65% salt. How many ounces of each solution should she use?
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Ignoring the fact that the concentrations are not realistic:
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x = amount of 60% mixture
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x*60 + (90-x)*90 = 90*65
Solve for x
etc