Question
Two types of rice costing Rs. 160 per kg and Rs. 260 per
kg. In what ratio should these be mixed so that obtained mixture sold at Rs. 300 per kg to earn a profit of 20%?Solution
SP of the mixture = Rs. 300 Gain = 20% ∴ CP of the mixture = 300 × 100/120 = 250 Now, using the allegation method 
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