the price of an article is cut by 10 % . to restore it to the former value , the new price must be increased by
"explanation : let original price = rs . 100 then , new price = rs . 90 increase on rs . 90 = rs . 100 increase % = ( 10 / 90 × 100 ) % = 11 1 / 9 % correct option : c"
add(subtract(const_100, subtract(const_100, 10)), const_2)