Question 233645
How much 30% solution and 70% solution need to be combined to make 80 ml of a 60% solution?
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Equation:
0.30x + 0.70(80-x) = 0.60*80 ml
Multiply thru by 100 to get:
30x + 70*80 - 70x = 60*80
-40x = -10*80
x = 20 ml (amount of 30% solution needed in the mixture)
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80-x = 60 ml (amount of 70% solution needed in the mixture)
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Cheers,
Stan H.