if the true discount on a sum due 3 years hence at 14 % per annum be rs . 168 , the sum due is :
"sol . p . w . = 100 * t . d . / r * t = 100 * 168 / 14 * 2 = 600 . ∴ sum = ( p . w . + t . d . ) = rs . ( 600 + 168 ) = rs . 768 . answer b"
add(divide(multiply(const_100, 168), multiply(14, const_2.0)), 168)