SOLUTION: Fred needs 45 ml of 18% sucrose solution to do his science experiment. He needs to mix a 15% sucrose solution with some 25% sucrose solution to get the 18% solution he wants. How m

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Question 835062: Fred needs 45 ml of 18% sucrose solution to do his science experiment. He needs to mix a 15% sucrose solution with some 25% sucrose solution to get the 18% solution he wants. How much of each should Fred use?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Is this weight per volume?

u for volume of 18%
v for volume of 25%

%2815u%2B25v%29%2F45=18 and u%2Bv=45

Look in the lesson link of my profile for "Mixing two concentrations for known amount of mixture"