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January 31, 2015

January 31, 2015

Posted by **James** on Sunday, December 5, 2010 at 10:05pm.

- Math -
**MathMate**, Sunday, December 5, 2010 at 10:52pmTheoretically they need 90ml & 3% = 2.7ml of 100% solution.

Let x=volume of 10% solution, then

90-x = volume of 1% solution.

x*10% + (90-x)*1% = 2.7

Multiply by 100:

10x + (90-x) = 270

Solve for x and check.

I get 20ml 10% and (90-20)ml 1%.

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