There is a bag of colored beads in the craft box. The colors of the 50 beads are shown in the table below.

We know there is a total of 50 beads. Since a bead can't be two colors at the same time
[tex]P(A\cup B)=P(A)+P(B)[/tex]In this case
[tex]P(R\cup G)=P(R)+P(G)=\frac{7}{50}+\frac{8}{50}=\frac{15}{50}=0.3[/tex]Thus, the probability of selecting a red or green bead is 0.3 or 30%