A) Rs. 14.40
B) Rs. 18
C) Rs. 15.60
D) Rs. 16.50
Correct Answer: B
Solution :
Let the original price of sugar = Rs. x/kg Reduced price of sugar = 80% of x \[=\frac{x\times 80}{100}\]= Rs. \[\frac{4x}{5}\]per kg \[\therefore \] \[\frac{36}{4x}-\frac{36}{x}=\frac{1}{2}\] \[\Rightarrow \] \[\frac{45}{x}-\frac{36}{x}=\frac{1}{2}\] \[\Rightarrow \] \[\frac{9}{x}=\frac{1}{2}\] \[\therefore \] \[x=9\times 2\]= Rs. 18 /kgYou need to login to perform this action.
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