A) 15%
B) 7%
C) 9%
D) 8%
Correct Answer: D
Solution :
[d] SP = Rs. 1173, Marked Price = Rs. 1500, \[{{r}_{1}}=15%,\] \[{{r}_{2}}=?\] From SP \[=MP\left( 1-\frac{{{r}_{1}}}{100} \right)\left( 1-\frac{{{r}_{2}}}{100} \right)\] \[\Rightarrow \] \[1173=1500\left( 1-\frac{15}{100} \right)\left( 1-\frac{{{r}_{2}}}{100} \right)\] \[\Rightarrow \] \[1173=15\times 85\times \frac{(100-{{r}_{2}})}{100}\] \[\Rightarrow \] \[(100-{{r}_{2}})=\frac{1173\times 100}{15\times 85}=92\] \[\Rightarrow \] \[{{r}_{2}}=100-92=8\] \[\Rightarrow \] \[{{r}_{2}}=8%\] |
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