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A mixture containing 41% of acid is mixed with another mixture containing 80% acid in the ratio 9 : 8. Find the percentage of acid in the mixture formed.

A mixture containing 41% of acid is mixed with another mixture containing 80% acid in the ratio 9 : 8. Find the percentage of acid in the mixture formed. Correct Answer 59%

The mixture is mixed in a ratio 9 : 8. Let the quantities of mixtures mixed be 900 and 800 litres, respectively. The amount of acid in the mixture formed = 900 * 41 / 100 + 800 * 80 / 100 = 369 + 640 = 1009 litres The percentage of acid in the mixture so formed = 1009 / 1700 * 100 = 59.35% ≈ 59%

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