(Solved): A bag contains 2 blue marbles, 3 red marbles, and 5 yellow marbles. The probability of drawing a bl ...

A bag contains 2 blue marbles, 3 red marbles, and 5 yellow marbles. The probability of drawing a blue marble out of the bag is $$\frac{2}{10}$$ or $$20\%$$. How many of what color of marbles must be added to the bag so that the probability of a blue marble being drawn at random from the bag is $$75\%$$ ? Select the correct answer below and fill in the answer box within your choice. (Type a whole number.) A. There must be yellow marbles added to the bag. B. There must be blue marbles added to the bag. C. There must be red marbles added to the bag.