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A merchant buys 20kg of a variety of rice at Rs. 1.50 per kg and 40 kg of another variety of rice at 90 paise per kg. He mixes them and sells one third of the mixture at Rs. 1 per kg. at what rate should he sell the remaining mixture so that he may earn a profit of 25% on the whole outlay?

A.	Rs. 1.5625/kg	B.	Rs. 1.10/kg
C.	Rs. 1.375/kg	D.	Rs. 1 / kg

Answer and Explanation

Answer:Rs. 1.5625/kg

Explanation:
Cost Price of 60kg rice = 20(1.50) + 40(0.9) = Rs. 66
Selling Price of 20kg = Rs. 20
Let Selling Price of 40kg = Rs. x
20 + x = 66[125/100]
40 + 2x = 165
2x = 125
x = Rs. 6.25
Selling price of 1 kg = 6.25 / 40 = Rs. 1.5625 / kg

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