Ms. Griffith lives on one of the highest floors in her apartment building. The elevator goes up one floor every 10.2 seconds. Along the way, it stops for a total of 45.8 seconds for people to get out. If it takes her 158 seconds to travel from the lobby to her apartment, what floor does she live on?

Hey there,

Its the 11th floor.

You take the total of 158 seconds, subtract the 45.8 seconds of mandatory stops which leaves you with 112 seconds. You devide the 112 with 10.2 and your final answer is 11.

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.