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How many kg of rice costing Rs. 42 per kg should be mixed with $$7\frac{1}{2}$$ kg rice costing Rs. 50 per kg so that by selling the mixture at Rs. 53.10 per kg, there is a gain of 18%.
Answer & Solution
Correct Answer:
Option
D
$$18\% \to \frac{9}{{50}}$$
59 unit → Rs. 53.10
1 unit → Rs. 0.9
50 unit → 9 × 5 = Rs. 45
59 unit → Rs. 53.10
1 unit → Rs. 0.9
50 unit → 9 × 5 = Rs. 45
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