Answer:
Ms. Griffiths lives on 3rd floor
Step-by-step explanation:
The elevator moves 10.2 seconds from one floor to another and stops for 45.8 seconds for people to exit. Thus, add: 10.2 seconds + 45.8 seconds = 56 seconds
If it takes her 158 seconds to travel from the lobby to her apartment, then 158 seconds/56 seconds = 2.8 = 3 (approximately).
Therefore, she lives on 3rd floor.
Mathematically, the values ought to be 168 seconds /56 seconds = 3.
