if w / x = 2 / 3 and w / y = 6 / 15 , then ( x + y ) / y =
w / x = 2 / 3 = > x = 3 / 2 w and w / y = 6 / 15 = > y = 15 / 6 w ( x + y ) / y = ( 3 / 2 w + 15 / 6 w ) / 15 / 6 w = 4 w / ( 15 / 6 w ) = 8 / 5 correct option : d
add(divide(divide(6, 2), divide(15, 3)), const_1)