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1. |
A solution of sugar syrup has 15 % sugar. Another solution has 5 % sugar. How many liter of the second solution must be added to 20 liters of the first solution to make a solution of 10 % sugar ? |
A. | 10 |
B. | 5 |
C. | 15 |
D. | 20 |
Answer» E. | |