• # question_answer Naresh sold two books for Rs. 600 each thereby gaining 20% on one book and losing 20% on the other book. Find his overall loss or gain percent. A)  8%                              B)  6%           C)  4%   D)  4.5%

(c): C.P of 1s1 book be ${{x}_{1}}$ $\therefore 1.2{{x}_{1}}=600$ $\Rightarrow {{x}_{1}}=\frac{600}{1.2}=500/-$ C.P of 2nd book be ${{x}_{2}}$ $\therefore 0.8\,{{x}_{2}}=600$ $\Rightarrow {{x}_{2}}=\frac{600}{0.8}=750/-$ $\therefore {{x}_{1}}+{{x}_{2}}=total\,C.P.=1250/-$ Total S.P = 1200/- $\therefore Loss%=\frac{50}{1250}\times 100%$ $=\frac{1}{25}\times 100%=4%$