the total of 324 of 20 paise and 25 paise make a sum of rs . 70 . the no of 20 paise coins is
"explanation : let the number of 20 paise coins be x . then the no of 25 paise coins = ( 324 - x ) . 0.20 * ( x ) + 0.25 ( 324 - x ) = 70 = > x = 220 . . answer : c ) 220"
divide(subtract(multiply(324, 25), multiply(70, const_100)), subtract(25, 20))