a number increased by 30 % gives 780. the number is
Choose the correct choice from the following:
A) 250
B) 400
C) 450
D) 600
E) 520
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">780 / (13/10)</gadget>
<output>600</output>

<result>D</result>
a number increased by 30 % gives 780. the number is
divide(780, add(const_1, divide(30, const_100)))
"formula = total = 100 % , increse = ` ` + ' ' decrease = ` ` - ' ' a number means = 100 % that same number increased by 30 % = 130 % 130 % - - - - - - - > 780 ( 130 × 6 = 780 ) 100 % - - - - - - - > 600 ( 100 × 6 = 600 ) d )"