A) 40%
B) 25%
C) 30%
D) 20%
Correct Answer: A
Solution :
Total \[CP=Rs.\,6000\] Profit = 25% Overall \[\left\{ \frac{x}{(100-x)}\times 100 \right\}%\] SP of half of the goods \[=\left\{ \left( \frac{r}{r+100} \right)\times 100 \right\}%\] SP of remaining half goods \[=\left\{ \left( \frac{r}{r-100} \right)\times 100 \right\}%\] Profit on remaining half goods costing Rs.3000 \[A=P{{\left( 1+\frac{R}{100} \right)}^{n}}\] \[220=200{{\left( 1+\frac{R}{100} \right)}^{n}}\]
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