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brivney
Jan 23, 2007, 12:21 PM
How do I make 20 volume peroxide out of 10 volume and 40 volume?

Capuchin
Jan 23, 2007, 12:40 PM
here you need to solve this equation:

10x + 40(1-x) = 20

where x is between 0 and 1

this will give x as the fraction of 1 whole volume of 10 volume peroxide.

start by expanding the brackets, then it should be easy algebra.

Good luck!