In a bag of 72 red and green marbles, 5/9 are green. What is the number of red marbles in the bag?
72 cards5/9 are green = 72/(5/9) = 40 green marbles72 - 40 = 32 red marbles
72 cards5/9 are green = 72/(5/9) = 40 green marbles72 - 40 = 32 red marbles
