A bag contains 5 blue, 3 red, 6 green, 9 orange, and 20 black marbles. What is the ratio of the number of blue marbles to the number of marbles that are orange or green?​

A bag contains 5 blue 3 red 6 green 9 orange and 20 black marbles What is the ratio of the number of blue marbles to the number of marbles that are orange or gr class=