A merchant sells his two cars – one at 15% loss and another at 12% profit. If the cost prices of the two cars are in the ratio of 1:2, what is his percent profit or loss?
Choose the correct answer.
A) 3% profit  B) 2% loss  C) 2% profit  D) 3% loss  E) None of these
Explanation:   Given that CPs are in the ratio 1:2   Therefore let the CPs be Rs.100 &amp; Rs.200 respectively,   1st SP = 100-15% of 100 = Rs.86.   2nd SP = 200 + 12% of 200 = Rs.224.   Total CP = Rs.300. Total SP = 85+224 = Rs.309.   Profit = Rs.309-300 = Rs.9.   Profit percent = 9x100/300 = 3% profit.   3% profitnswer: Option 3% profit
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A merchant sells his two cars – one at 15% loss and another at 12% profit. If the cost prices of the two cars are in the ratio of 1:2, what is his percent profit or loss?