Math
posted by Haley .
A biologist has 40% solution and 10% solution of the same plant nutrient. How many cubic centimeters of each should be mixed to obtain 25 cc of 16% solution?

Math 
Steve
If x cc are 40%, then the rest (25x) is 10%. So, adding up the nutrient content,
.40x + .10(25x) = .16(25)
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