8 gallons= 128 cups 20 guests x 2 cups each= 40 cups will be gone 128-40= 88 cups left over 88 cups= 5.5 gallons of punch left at the end of the party.
Total voters=v=80 total no. of democrats=d=65 total no. of republicans=r=15 probability of democrats=p1=65/80=0.8125 probability of republicans=p2=15/80=0.1875 probability of a democrat or a republican=p1+p2=0.8125+0.1875=1 <span />
