a shopkeeper sold an book offering a discount of 5 % and earned a profit of 30 %. what would have been the percentage of profit earned if no discount was offered?  Pick.
A) 140 B) 120 C) 130 D) 136.8 E) 150
<gadget id="calculator">100 + 30</gadget>
<output>130</output>

<gadget id="calculator">100 - 5</gadget>
<output>95</output>

<gadget id="calculator">130 / 95</gadget>
<output>26/19 = around 1.368421</output>

<gadget id="calculator">100 * (26/19)</gadget>
<output>2_600/19 = around 136.842105</output>

<result>D</result>
a shopkeeper sold an book offering a discount of 5 % and earned a profit of 30 %. what would have been the percentage of profit earned if no discount was offered?
multiply(const_100, divide(add(const_100, 30), subtract(const_100, 5)))
"let c . p . be $ 100 . then , s . p . = $ 130 let marked price be $ x . then , 95 / 100 x = 130 x = 13000 / 95 = $ 136.8 now , s . p . = $ 136.8 , c . p . = $ 100 profit % = 136.8 % . d"