if 40 % of ( x - y ) = 30 % of ( x + y ) then what percent of x is y ?
40 % of ( x - y ) = 30 % of ( x + y ) ( 40 / 100 ) ( x - y ) = ( 30 / 100 ) ( x + y ) 4 ( x - y ) = 3 ( x + y ) x = 7 y x = 7 y therefore required percentage = ( ( y / x ) x 100 ) % = ( ( y / 7 y ) x 100 ) = 14 % answer is d .
multiply(divide(subtract(40, 30), add(40, 30)), const_100)