THERE ARE ONLY BLUE CUBES, YELLOW CUBES AND GREEN CUBES IN A BAG. THERE ARE TWO TIMES AS MANY BLUE CUBES AS YELLOW CUBES AND SEVEN TIMES AS MANY GREEN CUBES AS BLUE CUBES BILLY TAKES AT RANDOM A CUBE FROM THE BAG WHAT IS THE PROBABILITY THAT BILLY TAKES A YELLOW CUBE GIVE YOUR ANSWER IN ITS SIMPLEST FORM