Stream of consciousness rationale: After inflating the 4 new balloons, she will have 2 red + 4 blue + 4 new = 10 total balloons. The probability of selecting red will be (2 red + 2 red newly inflated) / 10 total balloons = 40%.
The question and answer pair are described below.
Q: Kate has 2 red balloons and 4 blue balloons. Assuming she inflates 4 more balloons, two of each color red and blue, what is the percent likelihood that one selected at random will be red?
A: 40