the percentage profit earned by selling an article for rs. 1920 is equal to the percentage loss incurred by selling the same article for rs. 1280. at what price should the article be sold to make 25 % profit?  Choose the correct choice from the following.
A) rs . 2000  B) rs . 2200  C) rs . 2400  D) data inadequate  E) can not be determined
<gadget id="calculator">100 + 25</gadget>
<output>125</output>

<gadget id="calculator">125 / 100</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1_920 + 1_280</gadget>
<output>3_200</output>

<gadget id="calculator">3_200 / 2</gadget>
<output>1_600</output>

<gadget id="calculator">(5/4) * 1_600</gadget>
<output>2_000</output>

<result>A</result>
the percentage profit earned by selling an article for rs. 1920 is equal to the percentage loss incurred by selling the same article for rs. 1280. at what price should the article be sold to make 25 % profit?
multiply(divide(add(const_100, 25), const_100), divide(add(1920, 1280), const_2))
"explanation : let the c . p . of the article be rs . x given that % profit earned by selling article at rs . 1920 = % loss incurred by selling article at rs . 1280 ( 1920 − x / x ) ∗ 100 = ( x − 1280 / x ) ∗ 100 = > 1920 - x = x - 1280 = > 2 x = 3200 = > x = 1600 s . p . for 25 % profit = rs . 1600 + 25 % of rs . 1600 = rs . 1600 * ( 125 / 100 ) = rs . 2000 answer : a"