A) Rs. 820
B) Rs. 780
C) Rs. 790
D) Rs. 800
Correct Answer: D
Solution :
Let the advertised price be Rs. x. |
\[\therefore \] Selling price = Rs. \[\frac{77x}{100}\] |
\[\therefore \] Cost price = Rs. \[\left( \frac{77x}{100}-56 \right)\] |
\[\therefore \]\[\frac{77x-5600}{100}\times \frac{110}{100}=\frac{77x}{100}\] |
\[\Rightarrow \]\[\frac{77x-5600}{100}\times \frac{77x}{110}=\frac{7x}{10}\] |
\[\Rightarrow \] \[77x-5600=70x\] |
\[\Rightarrow \] \[7x=5600\] |
\[\Rightarrow \] \[x\]= Rs. 800 |
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