Nicole pulls a colored marble out of a bowl, choosing the marble at random. There are 120 marbles in the bowl, of which 80 are black, 28 are white, and the rest are red. Use words and numbers to describe the probability that she will pull a red marble out of the bowl. Show you work.
The total number of marbles in the bowl is 120.
The number of red marbles is total - (black marbles + white marbles) = 120 - (80 + 28) = 12
Therefore, the probability that Nicole will pull a red marble out of the bowl is 12/120 = 1/10 or 0.1.