Calculate a Desired Event

CONCEPTS

Tips

• To calcuate a desired event for a probability, write out the equation and solve the equation for the desired event.

PRACTICE PROBLEMS

Question 1 A bowl contains 6 red beads, 8 black beads, and a number of green beads. There are no other beads in the bowl. The probability of choosing a black bead from the bowl is 1/3. How many green beads are in the bowl?

-- Answer -- 10

8 / (6 + 8 + g) = 1/3

g = 10

ACT PRACTICE PROBLEMS