A shopkeeper mixes 15 kg of rice purchased @ ₹ 30/kg with 25 kg of rice purchased @ ₹ 40/kg. What…
The total cost of the mixture is \(15\times30+25\times40=450+1000=\text{₹ }1450\) for 40 kg, which is ₹ 36.25 per kg. For a 20% profit the selling price must be…
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A shopkeeper mixes 15 kg of rice purchased @ ₹ 30/kg with 25 kg of rice purchased @ ₹ 40/kg. What should be his selling price per kg in order to make a profit of 20%?
Answer and explanation
Correct answer D
The total cost of the mixture is for 40 kg, which is ₹ 36.25 per kg. For a 20% profit the selling price must be per kg. Taking the simple average of ₹ 30 and ₹ 40 would ignore that more of the dearer rice is used.
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NCHM Joint Entrance Examination (NCHM JEE)