SOLUTION: How many litres of a 30% acid solution should be added to 20 litres of 60% acid solution in order to obtain a 50% acid solution?

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 Click here to see ALL problems on Mixture Word Problems Question 472377: How many litres of a 30% acid solution should be added to 20 litres of 60% acid solution in order to obtain a 50% acid solution? Answer by ankor@dixie-net.com(15656)   (Show Source): You can put this solution on YOUR website!How many litres of a 30% acid solution should be added to 20 litres of 60% acid solution in order to obtain a 50% acid solution? : Let x = amt of 30% solution required : Write a decimal equiv, mixture equation .30x + .60(20) = .50(x+20) .30x + 12 = .5x + 10 12 - 10 = .5x - .3x 2 = .2x x = x = 10 liters of 30% stuff required