a) Rs. 720
b) Rs. 840
c) Rs. 600
d) Rs. 750
Answer: a
Explanation:
$$\eqalign{
& {\text{Loss }}20\% \cr
& {\text{Selling price}} \cr
& = 100\% – 20 = 80\% \cr
& 80\% = 480 \cr
& 1 = \frac{{480}}{{80}} \cr
& \left( {{\text{Profit }}20\% } \right) \cr
& = \frac{{480}}{{80}} \times 120 \cr
& = {\text{Rs}}{\text{. }}720 \cr} $$
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