Question 1146448
A hair dye is made by blending a 9% hydrogen peroxide solution and a 3% hydrogen peroxide solution.
How many milliliters of each are used to make a 300-milliliter solution that is 7% hydrogen peroxide?
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n = amount of 9%
t = amount of 3%
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n + t = 300 ----- total solution
9n + 3t = 300*7 ---- total dye
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2 eqns in 2 variables.
Can you solve for n & t?