A trader has 50 Kg of rice, a part of which he sells at 10% profit and the rest at 5% loss. He gains 7% on the whole. What is the quantity sold at 10% gain and 5% loss?
A
30 Kg, 10 Kg
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B
40 Kg, 15 Kg
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C
35 Kg, 40 Kg
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D
40 Kg, 10 Kg
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E
None of the above
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Solution
The correct option is D 40 Kg, 10 Kg
∴ Ratio of quantities sold at 10% profit and 5% loss =12 : 3 =4: 1 ∴ The quantity sold at 10% profit =504+1×4=40Kg and, the quantity sold at 5% loss =50-40=10 Kg.