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How much kg rice costing Rs 42 per kg should be mixed with 7.5 kg rice costing Rs 50 per kg so that by selling the mixture at Rs 53.10 per kg after gaining18% profit ? |
9 8 10\(\frac{1}{2}\) 12\(\frac{1}{2}\) |
12\(\frac{1}{2}\) |
S.P = 53.10 Profit = 18% C.P. = 53.10 × \(\frac{100}{118}\) =Rs. 45
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