SOLUTION: A spice mixture is 25% thyme. How many grams of thyme must be added to 12g of the mixture to increase the thyme content to 40%?

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Question 176763This question is from textbook algebra structure and method
: A spice mixture is 25% thyme. How many grams of thyme must be added to 12g of the mixture to increase the thyme content to 40%? This question is from textbook algebra structure and method

Answer by stanbon(75887) About Me  (Show Source):
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A spice mixture is 25% thyme. How many grams of thyme must be added to 12g of the mixture to increase the thyme content to 40%?
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Equation:
rhyme + rhyme = rhyme
0.25(12) + x = 0.40(12+x)
3 + x = 4.8 + 0.4x
0.6x = 1.8
x = 3 grams (amt. of rhyme that must be added)
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Cheers,
Stan H.