A retailer bought three different types of bags, B1, B2, and B3. The ratio of their cost prices was 4:5:6. He made a profit of 35% on B1, 18% on B2, but incurred a loss of 15% on B3. What was his approximate percent gain or loss in the entire transaction?

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1. Let cost prices be $4x, 5x, 6x$. Total cost $=15x$.

2. Selling prices: $SP_1=4x	imes1.35=5.4x$, $SP_2=5x	imes1.18=5.9x$, $SP_3=6x	imes0.85=5.1x$.

3. Total SP $=5.4x+5.9x+5.1x=16.4x$. Profit $=1.4x$ on $15x$.

4. Percent gain $=\frac{1.4x}{15x}	imes100\%=9.333\%\approx9.3\%$. So **Profit of 9.3%**.

FINAL_ANSWER: c

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