Rohit wants to earn 21% profit on a belt after offering 45% discount. By how much percentage more should he mark the price of his article above the cost price?
Let marked price of article = Rs. $$100x$$
Discount % = 45%
=> Selling price = $$100x-(\frac{45}{100}\times100x)=Rs.$$ $$55x$$
Profit % = 21%
=> Cost price = $$\frac{55x}{100+21}\times100=Rs.$$ $$\frac{500x}{11}$$
$$\therefore$$ Required % = $$\frac{100x-\frac{500x}{11}}{\frac{500x}{11}}\times100$$
= $$\frac{1100-500}{5}=\frac{600}{5}=120\%$$
=> Ans - (B)
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