Probablility that that first marble is red:
[tex]P_{red} = \frac{red}{total}[/tex]
[tex]P_{red} = \frac{5}{5+3}[/tex]
Probability that the second marble is green:
[tex]P_{green} = \frac{green}{total(new)}[/tex]
[tex]P_{green}= \frac{3}{4+3}[/tex] (because 1 red is now gone)
[tex]P_{total}=P_{red} \times P_{green}[/tex]
[tex]P_{total}= \frac{6}{8} \times \frac{3}{7} = \frac{18}{56} = \frac{9}{28} \approx 32.1\%[/tex]
