56 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780 . the bigger part is :
explanation : let the two parts be ( 56 - x ) and x . then , 10 ( 56 - x ) + 22 x = 780 = > 12 x = 220 = > x = 20 . bigger part = ( 56 - x ) = 37.66 . answer : b ) 37.66
subtract(56, divide(subtract(780, multiply(56, 10)), subtract(22, 10)))