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1. |
A producer of a tea blends two varieties of tea from tea gardens one costing 18 per kg and another 20 kg in the ratio 5 : 3. If he sells the blended variety at 21 per kg, then his gain percentage is |
A. | 18 |
B. | 8 |
C. | 10 |
D. | 12 |
Answer» E. | |