SOLUTION: A Bag contains 6 yellow beads and a number of green beads. When a bead is selected at random, the probability that a yellow bead is selected is 2/5. How many green beads are in the

Algebra ->  Probability-and-statistics -> SOLUTION: A Bag contains 6 yellow beads and a number of green beads. When a bead is selected at random, the probability that a yellow bead is selected is 2/5. How many green beads are in the      Log On


   

Question 1032136: A Bag contains 6 yellow beads and a number of green beads. When a bead is selected at random, the probability that a yellow bead is selected is 2/5. How many green beads are in the bag? Thanks!
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +g+ = number of green beads
+2%2F5+=+6+%2F+%28+6+%2B+g+%29+
+2%2A%28+6+%2B+g+%29+=+6%2A5+
+12+%2B+2g+=+30+
+2g+=+18+
+g+=+9+
There are 9 green beads
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check:
+2%2F5+=+6+%2F+%28+6+%2B+g+%29+
+2%2F5+=+6+%2F+%28+6+%2B+9+%29+
+2%2F5+=+6%2F15+
+2%2F5+=+2%2F5+
OK