1. Patrick told his friend that his sister is 3 times older than him. If Patrick is nine at the moment, how old is his sister? 2. You earn $10 per hour, while Sam earns 1.5 times more than you per hour. If the total you both earned is $300. What is Sam's share? 3. A bus departed from station 1 at 11 pm with 44 passengers. An hour later, a few passengers got off at station 2. The number of passengers who boarded the bus at station 2 were twice the number of passengers who got off the bus. If the bus has 50 passengers now, how many passengers got off at station 2?