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The cost price of an article is Rs. 7840. What should be the selling price of the article so that there is a profit of 7% ?

a) Rs. 8000
b) Rs. 8300
c) Rs. 8388.80
d) Rs. 8500

Answer: c
Explanation:
$$\eqalign{ & {\text{C}}{\text{.P}}{\text{.}} = {\text{Rs}}.7840 \cr & {\text{Profit}} = 7\% \cr & \therefore {\text{S}}{\text{.P}}{\text{.}} = {\text{Rs}}{\text{.}}\left( {\frac{{107}}{{100}} \times 7840} \right) \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = {\text{Rs}}{\text{. }}8388.80 \cr} $$

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