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#31195

statistics

probability

hard

90 sec

A bag contains only red, blue, and green marbles. The probability of selecting a blue marble from the bag is $\frac{1}{3}$ , and the probability of selecting a green marble from the bag is $\frac{1}{4}$ . If there are a total of 48 marbles in the bag, how many red marbles are in the bag?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.