The marked price of a helmet is 30% more than its cost price. If the helmet is sold for Rs 744 after a discount of Rs 36, then what will be the profit percentage?
Let cost price = Rs. $$100x$$
=> Marked price = $$100x+(\frac{30}{100}\times100x)=Rs.$$ $$130x$$
Selling price = Rs. 744
=> Discount amount = $$130x-744=36$$
=> $$130x=36+744=780$$
=> $$x=\frac{780}{130}=6$$
Thus, cost price = $$100\times6=Rs.$$ $$600$$
$$\therefore$$ Profit % = $$\frac{(744-600)}{600}\times100$$
= $$\frac{144}{6}=24\%$$
=> Ans - (A)
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