SOLUTION: A bag contains 18 red and x white discs. The probability that a disc drawn at random from the bag will be white is 3/5.
(a). Find the value of x.
Algebra ->
Probability-and-statistics
-> SOLUTION: A bag contains 18 red and x white discs. The probability that a disc drawn at random from the bag will be white is 3/5.
(a). Find the value of x.
Log On
Question 1006646: A bag contains 18 red and x white discs. The probability that a disc drawn at random from the bag will be white is 3/5.
(a). Find the value of x. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A bag contains 18 red and x white discs. The probability that a disc drawn at random from the bag will be white is 3/5.
(a). Find the value of x.
------
Total # of discs:: 18+x
# of white discs:: x
----
P(white) = x/(18+x) = 3/5
-----
5x = 54+3x
2x = 54
x = 27 (# of white)
---------
Cheers,
Stan H.
-----------
(