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| 1. |
Several liters of acid were drawn off from a 54 L vessel full of acid and an equal amount of water is added. Again the same volume of the mixture was drawn off and replaced by water. As a result, the vessel contained 24L of pure acid. How much acid was drawn off initially? |
| A. | 12L |
| B. | 16L |
| C. | 8L |
| D. | 24L |
| Answer» D. 24L | |