Final answer:
Doris passed through 24 floors in the lift after walking up 5 floors from her office on the twenty-second floor to the twenty-seventh floor and then taking the lift down to the third floor.
Step-by-step explanation:
Doris initially walked up from the twenty-second floor to five floors above, which brings her to the twenty-seventh floor. Then, she took the lift down to the third floor.
To calculate the number of floors Doris went through while in the lift, we need to find the difference between the floor she was on before getting in the lift and the floor she got off at.
Doris's office is on the twenty-second floor and she walked up five floors to another office, so she was on the twenty-seventh floor before taking the lift.
She then took the lift to the third floor, so the difference in floors is 27 minus 3, which equals 24.
To calculate the number of floors she passed through while in the lift, we subtract the floor she ended on from the floor she started on before taking the lift.
The calculation is as follows:
27 (started from this floor)
- 3 (ended on this floor)
= 24 floors
. Therefore, Doris went through 24 floors while in the lift.