the list price of an article is rs . 67 . a customer pays rs . 56.16 for it . he was given two successive discounts , one of them being 10 % . the other discount is ?
67 * ( 90 / 100 ) * ( ( 100 - x ) / 100 ) = 56.16 x = 6.86 % answer : d
multiply(divide(subtract(subtract(67, multiply(67, divide(10, const_100))), 56.16), subtract(67, multiply(67, divide(10, const_100)))), const_100)