1. Senior citizens In a certain city, 30,000 citizens out of 80,000 are over 50 years of age. What is the probability that a citizen selected at random will be 50 years old or younger?
2. Newspapers According to funny2.com, the odds that a person aged 18-29 reads a newspaper regularly are 1 to 3. What is the probability that such a person selected at random reads a newspaper regularly?