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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
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- 10%
- 12%
- 14%
- 8%
Correct Option: A
Here , Ratio of two varieties of tea = 7 : 3
As per the given in question ,
C.P. of 700 gm of tea at $ 18 per 100 gm = 7 × 18 = $ 126
C.P. of 300 gm of tea at $ 13 per 100 gm = 3 × 13 = $ 39
Total cost of 1000 gm = 126 + 39 = $ 165
Total S.P. of 1000 gm = 18.15 × 10= $ 181.5
Gain = Total S.P. of 1000 gm - Total C.P. of 1000 gm
Gain = 181.5 – 165 = $ 16.5
| Gain percent = | | × 100 = 10% | | 165 |
