Been stuck on this 4 days!!! Please help!! Poisson Process.

Hi I have been stuck on this for days I do not think this is possible for me to do!!! I really need help. Thanks in advanced.

Ships pass a bird sanctuary at a Poisson rate of one per hour. Twenty percent of the ships are oil tankers.

1. What is the probability that at least one oil tanker will pass during a 24 hours.

2. If 30 ships have past by in one day, what is the probability that 6 of them were oil tankers.

Thanks again I am dying to know the answer!!!