Question 13
Alice, Bob and Carol are working together to complete a task. Assume each person works at a constant rate and is each responsible for one-third of the total work. Alice starts at 9:00 am, Bob starts at 10:00 am and Carol starts at 10:30 am. They all take a break at 12:00 pm, by which they have already completed half of the total work. After lunch, they resume working at 1:00 pm. If Alice finishes her portion at 3:00 pm and Bob finishes his portion at 4:00 pm, at what time will Carol complete her portion of the task?