Ms. Zimmer has pink and purple pens. She has 3 times the number of pink pens as purple pens. If a pen is chosen at random, what is the probability she will pick pink?
If there is 1 purple pen, and pink pens have 3x the amount of purple pens, there are 3 pink pens. There are 4 pens in all so 3 out of the 4 pens are pink.
