SOLUTION: A spice mixture is 25% thyme. How many grams of thyme must be added to make a 15 gram mixture that is 40% thyme?

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Question 254708: A spice mixture is 25% thyme. How many grams of thyme must be added to make a 15 gram mixture that is 40% thyme?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A spice mixture is 25% thyme.
How many grams of thyme must be added to make a 15 gram mixture that is 40% thyme?
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Let x = amt of pure thyme to be added
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The amt of 25% mixture = (15-x)
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An amt of thyme equation
1.0x + .25(15-x) = .40(15)
1x + 3.75 - .25x = 6
1x - .25x = 6 - 3.75
.75x = 2.25
x = 2.25%2F.75
x = 3 grams of pure thyme required to be added to 12 gr of the 25% mixture
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You can check solution in original equation