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1. |
A beaker contains acid and water in the ratio 1 ∶ x. When 300 ml of the previous mixture and 50 ml of water are mixed, the ratio of acid and water becomes 2 ∶ 5. What is the value of x? |
A. | 2 |
B. | 1 |
C. | 3 |
D. | 4 |
Answer» B. 1 | |