SOLUTION: find the concentration of sugar as percent when 20 gram sugar mixed in 60 grams water ,how many more grams of sugar has to be added to make it 30% solution can you please clarif

Question 644232: find the concentration of sugar as percent when 20 gram sugar mixed in 60 grams water ,how many more grams of sugar has to be added to make it 30% solution
can you please clarify the steps to solve it please
Best Regards
Luay
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find the concentration of sugar as percent when 20 gram sugar mixed in 60 grams water ,how many more grams of sugar has to be added to make it 30% solution
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Concentration = 20/80 = 25%
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Equation:
sugar + sugar = sugar
25%*80 + x = 0.30(80+x)
25*80 + 100x = 30*80 + 30x
70x = 5*80
x = 400/70 = 5.71 grams (amt of sugar to add)
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Cheers,
Stan H.
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