A grocer mixes two varieties of rice costing Rs. 30 and Rs. 40 per kg in the ratio 3 : 2 and sells the mixture at Rs. 42.50 per kg. What is his profit percentage?
Correct answer A. 25%
Explanation
Cost price of mixture = (3 x 30 + 2 x 40)/5 = Rs. 34. Profit = 8.50, so profit % = 8.50/34 x 100 = 25%.
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