Rita purchased 150 kg of wheat at the rate of Rs. 7 per kg. She sold 50 kg at a profit of 10%. At what rate/kg should she sell the remaining to get a profit of 12% on the total deal?
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The purchasing price is :
150 × 7 = 1050
For the overall profit to be 12% the selling price should be :
112/100 × 1050 = 1176
= 1176
The buying price of 50kg is :
50 × 7 = 350
Selling price is :
110/100 × 350 = 385
The remaining amount :
1176 - 385 = 791
The remaining mass is :
150 - 50 = 100kg
791/100 = 7.91
Rs 7.91 per kg
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