A bag holds 3 red, 6 blue, 5 purple, and 2 orange marbles. One marble is selected at random. What is the probability in which the marble chosen is blue?
The probability of blue is blue/total. The number of blue marbles is 6, and the total number of marbles is 16 (3 + 6 + 5 + 2 = 16). Thus, the probability of selecting a blue is 6/16= 3/8