[IBPS (PO/MT) Pre 2015]
A) Rs. 7500
B) Rs. 9000
C) Rs. 8000
D) Rs. 8500
E) Rs. 9200
Correct Answer: B
$ \Rightarrow $ $ CP=x+6800 $ … (i)
$ \Rightarrow $ $ CP+\frac{x}{2}=7850 $ … (ii) On solving Eqs. (i) and (ii), we get
$ \Rightarrow $ $ x+6800+\frac{x}{2}=7850 $
$ \Rightarrow $ $ \frac{3x}{2}=1050 $
$ \Rightarrow $ $ x=\frac{1050\times 2}{3} $
$ \Rightarrow $ $ x=700 $
$ \Rightarrow $ $ CP=700+6800=Rs.7500 $ SP to have 20% profit $ =7500\times \frac{120}{100}=Rs.9000 $