a shopkeeper fixes the marked price of an item 40 % above its cost price. the percentage of discount allowed to gain 8 % is
Options.
A) 23.85 %
B) 22.85 %
C) 21.85 %
D) 20.85 %
E) none of these
<gadget id="calculator">8 + 100</gadget>
<output>108</output>

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

<gadget id="calculator">108 / 140</gadget>
<output>27/35 = around 0.771429</output>

<gadget id="calculator">(27/35) * 100</gadget>
<output>540/7 = around 77.142857</output>

<gadget id="calculator">100 - (540/7)</gadget>
<output>160/7 = around 22.857143</output>

<result>B</result>
a shopkeeper fixes the marked price of an item 40 % above its cost price. the percentage of discount allowed to gain 8 % is
subtract(const_100, multiply(divide(add(8, const_100), add(40, const_100)), const_100))
"explanation : let the cost price = rs 100 then , marked price = rs 140 required gain = 8 % , so selling price = rs 108 discount = 140 - 108 = 32 discount % = ( 32 / 140 ) * 100 = 22.85 % option b"