an uneducated retailer marks all his goods at 50 % above the cost price and thinking that he will still make 25 % profit, offers a discount of 25 % on the marked price. what is his actual profit on the sales? Choose the most appropriate option
A) 12.50 %  B) 13.50 %  C) 14 %  D) 14.50 %  E) none
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/2) * (1/4)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/2) - (3/8)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">(9/8) - 1</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 100</gadget>
<output>25/2 = around 12.5</output>

<result>A</result>
an uneducated retailer marks all his goods at 50 % above the cost price and thinking that he will still make 25 % profit, offers a discount of 25 % on the marked price. what is his actual profit on the sales?
multiply(subtract(subtract(add(const_1, divide(50, const_100)), multiply(add(const_1, divide(50, const_100)), divide(25, const_100))), const_1), const_100)
"sol . let c . p . = rs . 100 . then , marked price = rs . 150 . s . p . = 75 % of rs . 150 = rs . 112.50 . ∴ gain % = 12.50 % . answer a"