SOLUTION: I need 250 millileters of a 20% solution. I only have a 10% solution and a 60% solution available. How many millileters of 10% solution must I mix with the 60% to obtain the req

SOLUTION: I need 250 millileters of a 20% solution. I only have a 10% solution and a 60% solution available. How many millileters of 10% solution must I mix with the 60% to obtain the req

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Question 995026: I need 250 millileters of a 20% solution. I only have a 10% solution and a 60% solution available.
How many millileters of 10% solution must I mix with the 60% to obtain the required solution?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Example shows a method to solve, using just a single variable.
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