a dealer purchases 15 articles for rs. 25 and sells 12 articles for rs. 30. find the profit percentage?	Answers.
A) 25 %  B) 50 %  C) 20 %  D) 5 %  E) none of these
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">30 * 5</gadget>
<output>150</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">150 - 100</gadget>
<output>50</output>

<result>B</result>
a dealer purchases 15 articles for rs. 25 and sells 12 articles for rs. 30. find the profit percentage?
subtract(multiply(30, add(const_4, const_1)), multiply(25, const_4))
"l . c . m of 15 and 12 = 60 cp of 60 articles = rs . 100 ( 25 * 4 ) sp of 60 articles = rs . 150 ( 30 * 5 ) profit percentage = ( 150 - 100 ) / 100 * 100 = 50 % answer : b"