selling an kite for rs. 30, a shop keeper gains 40 %. during a clearance sale, the shopkeeper allows a discount of 10 % on the marked price. his gain percent during the sale is?  Select the correct option
A) 8 %
B) 10 %
C) 11 %
D) 15 %
E) 26 %
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">100 - 10</gadget>
<output>90</output>

<gadget id="calculator">(3/10) * 90</gadget>
<output>27</output>

<gadget id="calculator">30 * 100</gadget>
<output>3_000</output>

<gadget id="calculator">40 + 100</gadget>
<output>140</output>

<gadget id="calculator">3_000 / 140</gadget>
<output>150/7 = around 21.428571</output>

<gadget id="calculator">27 - (150/7)</gadget>
<output>39/7 = around 5.571429</output>

<gadget id="calculator">(39/7) / (150/7)</gadget>
<output>13/50 = around 0.26</output>

<gadget id="calculator">(13/50) * 100</gadget>
<output>26</output>

<result>E</result>
selling an kite for rs. 30, a shop keeper gains 40 %. during a clearance sale, the shopkeeper allows a discount of 10 % on the marked price. his gain percent during the sale is?
multiply(divide(subtract(multiply(divide(30, const_100), subtract(const_100, 10)), divide(multiply(30, const_100), add(40, const_100))), divide(multiply(30, const_100), add(40, const_100))), const_100)
"explanation : marked price = rs . 30 c . p . = 100 / 140 * 30 = rs . 21.42 sale price = 90 % of rs . 30 = rs . 27 required gain % = 5.57 / 21.42 * 100 = 26 % . answer : e"