after decreasing 80 % in the price of an article costs rs. 320. find the actual cost of an article?
Choose the correct choice from the following answers.
A) 2777  B) 2987  C) 1200  D) 9977  E) 1600
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">320 / (1/5)</gadget>
<output>1_600</output>

<result>E</result>
after decreasing 80 % in the price of an article costs rs. 320. find the actual cost of an article?
divide(320, subtract(const_1, divide(80, const_100)))
"cp * ( 20 / 100 ) = 320 cp = 16 * 100 = > cp = 1600 answer : e"