by selling an article at rs. 300, a profit of 25 % is made. find its cost price?	Pick one.
A) s . 486  B) s . 455  C) s . 240  D) s . 480  E) s . 489
<gadget id="calculator">300 * 100</gadget>
<output>30_000</output>

<gadget id="calculator">100 + 25</gadget>
<output>125</output>

<gadget id="calculator">30_000 / 125</gadget>
<output>240</output>

<result>C</result>
by selling an article at rs. 300, a profit of 25 % is made. find its cost price?
divide(multiply(300, const_100), add(const_100, 25))
"sp = 300 cp = ( sp ) * [ 100 / ( 100 + p ) ] = 300 * [ 100 / ( 100 + 25 ) ] = 300 * [ 100 / 125 ] = rs . 240 answer : c"