Janice's office is on the third floor, and she has to walk up 3 flights of stairs to get to her office. In a single day, she goes up the three flights of stairs 5 times, down the the three flights of stairs 3 times, and uses the elevator the remainder of the time. How many flights of stairs does Janice walk (up and down) in a single day? Let's answer step by step:
Janice walks up 3 flights of stairs 5 times per day, for a total of 3 * 5 = 15 flights of stairs. Janice walks down 3 flights of stairs 3 times per day, for a total of 3 * 3 = 9 flights of stairs. In total, she walks 15 + 9 = 24 flights of stairs in a single day. The answer: 24.