Given: 474 green beans, and 143 yellow beans.
The probability of getting an offspring that is green is
[tex]\begin{gathered} \Pr (\text{green beans})=\frac{\text{number of green beans}}{\text{total number of beans}} \\ \Pr (\text{green beans})=\frac{474}{474+143} \\ \Pr (\text{green beans})=\frac{474}{617}\approx0.768 \\ \\ \text{Converted to percentage that is} \\ \Pr (\text{green beans})=76.8\% \end{gathered}[/tex]