1.

A trader mixes three varieties of refined oil costing Rs. 100, Rs. 40 and Rs. 60 per litre in the ratio 2 : 4 : 3, and sells the mixture at Rs. 66 per litre. What percentage of profit does he make?

A. 12%
B. 10%
C. 9%
D. 8%
Answer» C. 9%


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