"1.5 hours" refers to a duration of time that is equivalent to 90 minutes. This measurement is often used in various contexts, such as scheduling events, planning activities, or estimating travel time. For example, a movie might last 1.5 hours, making it a convenient length for viewers. In daily life, people might allocate 1.5 hours for tasks like exercising, studying, or commuting. Understanding this time frame can help individuals manage their schedules effectively, ensuring they have enough time to complete their responsibilities or enjoy leisure activities.