<PRE><B>Question 167913</B>
A spice mixture is 25% thyme. How many grams of thyme must be added to 12 g
 of the mixture to increase the thyme content to 40%?
:
Let 1x = amt of 100% thyme to be added
:
.25(12) + 1x = .40(x + 12)
:
3 + 1x = .4x + 4.8
:
1x - .4x = 4.8 - 3
:
.6x = 1.8
x = {{{1.8/.6}}}
x = 3 grams of Thyme to be added
:
:
Check solution in Thyme amt equation
.25(12) + 3 = .4(15)
3 + 3 = 6
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