A) Rs. 15680
B) Rs. 16220
C) Rs. 14540
D) Cannot be determined
E) None of the above
Correct Answer: A
$ \Rightarrow $ $ SP=8400 $
$ \Rightarrow $ $ x-\frac{x}{4}=8400 $
$ \Rightarrow $ $ \frac{3x}{4}=8400 $
$ \Rightarrow $ $ x=\frac{8400\times 4}{3}=2800\times 4 $
$ \Rightarrow $ $ x=11200 $ Required selling price $ =x+\frac{40}{100}\times x $ $ =11200+\frac{4}{10}\times 11200 $ $ =11200+4480=Rs\text{.},15680 $