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1. |
A shopkeeper blends two varieties of tea costing $ 18 and $ 13 per 100 gm in the ratio 7 : 3. He sells the blended variety at the rate of $ 18.15 per 100 gm. His percentage gain in the transaction is |
A. | 10% |
B. | 12% |
C. | 14% |
D. | 8% |
Answer» B. 12% | |