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Question

Coffee costing Rs 250 per kg was mixed with chicory costing Rs 75 per kg in the ratio 5 : 2 for a  certain blend. If the mixture was sold at Rs 230 per kg, find the gain or loss per cent.


Solution

Let 5 kg of coffee be mixed with 2 kg of chicory.CP of the mixture=Rs (250×5+75×2)=Rs (1250+150)=Rs. 1400SP of the mixture=Rs (7×230)=Rs. 1610Since SP>CP, there is a gain. Now, gain=Rs (1610-1400)=Rs. 210Gain percentage=(gaintotal CP×100)%=(2101400×100)%=15%

Mathematics
RS Aggarwal (2016)
Standard VIII

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