a reduction of 10 % in the price of salt enables a lady to obtain 10 kgs more for rs . 100 , find the original price per kg ?
"100 * ( 10 / 100 ) = 10 - - - 10 ? - - - 1 = > rs . 1 100 - - - 90 ? - - - 1 = > rs . 1.1 answer : a"
multiply(divide(divide(multiply(divide(10, const_100), 100), 10), multiply(divide(10, const_100), 100)), const_100)